PROGRAMA FONDECYT

INFORME FINAL

ETAPA 2017

COMISIÓN NACIONAL DE INVESTIGACION CIENTÍFICA Y TECNOLÓGICA

VERSION OFICIAL Nº 2

FECHA: 30/10/2017

Nº PROYECTO : 3150238 DURACIÓN : 3 años AÑO ETAPA : 2017 TÍTULO PROYECTO : AN EXTINCTION-FREE VIEW OF STAR FORMING GALAXIES AND THEIR CONSTITUENTS THROUGH RADIO AND MM/SUB-MM OBSERVATIONS.

DISCIPLINA PRINCIPAL : ASTRONOMIA GRUPO DE ESTUDIO : ASTRON.,COSMOL.Y PAR INVESTIGADOR(A) RESPONSABLE : CRISTINA ROMERO CAÑIZALES DIRECCIÓN : COMUNA : CIUDAD : Santiago REGIÓN : METROPOLITANA

FONDO NACIONAL DE DESARROLLO CIENTIFICO Y TECNOLOGICO (FONDECYT) Moneda 1375, Santiago de Chile - casilla 297-V, Santiago 21 Telefono: 2435 4350 FAX 2365 4435 Email: [email protected] INFORME FINAL PROYECTO FONDECYT POSTDOCTORADO

OBJETIVOS

Cumplimiento de los Objetivos planteados en la etapa final, o pendientes de cumplir. Recuerde que en esta sección debe referirse a objetivos desarrollados, NO listar actividades desarrolladas. Nº OBJETIVOS CUMPLIMIENTO FUNDAMENTO 1 Exploiting high-resolution radio data to obtain an TOTAL I participated in different ISI publications extinction-free view of the star formation and contributing with the analysis and/ or AGN activity in starbursting systems. interpretation of proposed and/or archival radio observations of different galaxies which have undergone or are undergoing a merger and thus contain star-formation and AGN components. The references are Koss et al. (2015), Ricci et al. (2016), Romero-Cañizales et al. (2016) and Romero-Cañizales et al. (2017). 2 mm/sub-mm studies of the gas and dust in a rare PARCIAL The publication I am leading based on ALMA triple merger, to shed light into the star formation observations is still in preparation. New ALMA processes and the active phase of AGN in and VLA data were obtained within the past three extreme environments. years. This added needed components to our work but have turned it at the same time more complex. I expect to complete this work in the next few months and publish it during the first half of 2018. However, one article containing part of our study has already been submitted and accepted in an ISI journal (see Väisänen et al. 2017). I also participated in two publications studying the mm-continuum in dusty star-forming galaxies at high-redshift (see details in González-López et al. 2017 and Laporte et al. 2017). 3 Constraining the circumstellar medium around TOTAL I participated in different ISI publications related young CCSNe in starburst galaxies with radio and to the study of core-collapse supernovae and a mm-wavelength studies to help us characterize "new" class of transient which has risen great the progenitor stars and aid in the understanding interest in the last few years (tidal disruption of the different CCSN types. events). In some cases the transients have shown signatures expected from TDEs but also from supernovae, making their interpretation more challenging. I contributed with proposed and/or archival radio observations (analysis and/or interpretation) and also as an observer at the New Technology Telescope in La Silla in the studies published by Kangas et al. (2016), Dwarkadas et al. (2016), Leloudas et al. (2016), Kool et al. (2017), Bose et al. (2017) and Kankare et al. (2017).

Otro(s) aspecto(s) que Ud. considere importante(s) en la evaluación del cumplimiento de objetivos planteados en la propuesta original o en las modificaciones autorizadas por los Consejos. RESULTS OBTAINED: For each specific goal, describe or summarize the results obtained. Relate each one to work already published and/or manuscripts submitted. In the Annex section include additional information deemed pertinent and relevant to the evaluation process. The maximum length for this section is 5 pages. (Arial or Verdana, font size 10).

My FONDECYT postdoctoral project aimed at offering a more comprehensive view of galaxies which undergo a period of very active star formation probably accompanied by super-massive 6 9.5 black hole (SMBH; MBH=10 – 10 M⊙) growth and subsequent active galactic nucleus (AGN) activity. These galaxies are usually interacting systems whose energy is mostly emitted in the IR 11 with a luminosity above 10 L⊙ (Kilerci-Eser, Goto, Doi 2014), and therefore receive the name of luminous infrared galaxy (LIRG), or ultra luminous infrared galaxy (ULIRG) if its luminosity 12 surpasses 10 L⊙. The research objectives of the project were: 1) Exploiting high-resolution radio data to obtain an extinction-free view of the star formation and AGN activity in starbursting systems. 2) mm/sub-mm studies of the gas and dust in a rare triple merger, to shed light into the star formation processes and the active phase of AGN in extreme environments. 3) Constraining the circumstellar medium (CSM) around young core-collapse supernovae (CCSNe) in starburst galaxies with radio and mm-wavelength studies to help us characterize the progenitor stars and aid in the understanding of the different CCSN types. In the following, I describe the results pertaining to each research objective.

Research objective 1 is an effort to build a sample of (U)LIRGs observed with radio interferometry techniques and help understand their powering mechanisms and evolution. The most significant result I obtained in the context of this research objective comes from the study of the LIRG IC883. This is an advanced merger in which the star formation dominates the global energetics of the system. However, our radio observations show that the nuclear region is dominated by an AGN that has a core-jet morphology (see Figure 1). The core has a very inverted spectrum and a low frequency turnover at ~4.4 GHz, indicating this is a young source (~3000 yr). These and other properties, make of IC883 a candidate for the nearest, the least luminous and one of the youngest Gigahertz-Peaked Spectrum (GPS) sources ever found. It has been proved in the past that there is a relation between merging galaxies and GPS sources, however, finding them in very active star- forming environments is very uncommon. Our study has opened a new window to investigate the physical environments of low-luminosity, young GPS sources, which can potentially be a numerous population among LIRGs in an advanced merger stage, but have so far been missed presumably owing to the lack of high-resolution, high-sensitivity radio data (see more details in Romero- Cañizales et al. 2017). The Luminous InfraRed Galaxy Inventory (LIRGI; http://lirgi.iaa.es/) is a high-resolution radio complement to legacy observations made with the NASA Great Observatories All-Sky LIRG Survey (GOALS) program. It includes e-MERLIN and EVN continuum, line (HI, OH) as well as polarisation observations. Although I expected these data to be ready during my FONDECYT postdoctoral project, the observations have been suffering from multiple delays and only a handful from the 42 galaxies have been observed. During a visit I made to the Jodrell Bank Centre for Astrophysics in 2016, I worked on the e-MERLIN data of galaxy Mrk 331. The continuum data did not have a high- enough signal to noise ratio and it only shows a compact source, likely the nucleus of the galaxy, and some hints of diffuse emission. Unfortunately the HI and OH line data were not useful and we are still waiting for new observations to be delivered. As an extension of this research objective, I also studied PGC043234, a post-starburst galaxy that resulted from a merger (Prieto et al. 2016) and has currently a negligible star formation. This system recently hosted the tidal disruption event (TDE) ASASSN-14li. TDEs are one of the mechanisms able to alter the accretion rate of material onto a SMBH, by means of the total or partial disruption of a star that wanders in the vicinity of the BH (e.g., Evans et al. 1989). Either at an early or at a late merger stage, a galaxy providing material for the steady or intermittent accretion onto a BH will also be the scenario for the formation of a jet. The host galaxy can be dusty and have large amounts of gas (e.g., a LIRG) or an over-density of stars (e.g., post- starburst galaxy) hence making most observations of the innermost <100 pc region (where the activity is taking place) basically infeasible. Our EVN observations of ASASSN-14li have allowed us to resolve the system into two components 2pc apart (see Figure 2). The components resemble a core-jet/outflow system, whose secondary component can be related directly to ASASSN-14li if its motion is superluminal, or to a past AGN or TDE if its motion is subluminal. The exiting possibility exists that both components are instead a binary BH system. We have been granted more EVN and global VLBI time which will help characterise these components and understand their origin (see more details in Romero-Cañizales et al. 2016). Related to this research objective, I also participated in the following studies: * NGC 3393 is a spiral galaxy with negligible star formation and a Seyfert 2 nucleus. In the past, it was reported to be the host of a dual AGN, the one with the smallest physical separation ever found (150 pc; Fabbiano et al. 2011). The aftermath of a galaxy merger is a powerful AGN, and thus, the detection of dual AGNs represent a test for the merger-driven AGN model. However, only a few cases of dual AGN at sub-kiloparsec separations have been confirmed. NGC 3393 not being an obvious present nor past merger, was an outstanding case and represented a challenge to the formation of powerful AGNs. I studied archival radio data from the VLA and VLBA and found that the large scale structure resembles an AGN with a two-sided jet rather than a dual AGN. This work, together with a re-analysis of archival X-ray and other data showed that the previously claimed detection of a dual AGN in this galaxy was indeed spurious. See the details of this study in Koss, Romero-Cañizales et al. (2015). * NGC6286 is a LIRG in an early merger stage with another galaxy. The source is part of a small sample of galaxies in different merger stages observed by NuSTAR. Most IR and X-ray tracers of AGN activity in (U)LIRGs failed to detect the AGN in NGC6286. The high-energy (≥10 keV) X-ray observations with NuSTAR showed that NGC6286 hosts a very obscured low-luminosity AGN. I contributed to this project with the analysis of archival VLA and VLBI data, which resulted in the detection of two compact sources coincident with the 3 – 8 keV core of NGC6286. See details in Ricci et al. (2016).

Research objective 2 makes use of mm/sub-mm data to study dusty galaxies. The core of this research objective was the study of the LIRG IRAS 19115-2124. Our cycle 2 ALMA approved project (2013.1.00328.S) included observations of three CO transitions. The data was delivered in three different parts from November 2014 to November 2015. During that time, we also obtained VLA data at one frequency. An initial analysis showed that the system was much more complex and rich than we originally thought based on our VLT data, with multiple velocity components on the same spatial regions. To help interpret the data, we deemed necessary to obtain observations from molecules tracing much denser gas, such as HCN, HNC and HCO+. We requested new ALMA observations which were approved under project 2015.1.00326.S and were subsequently delivered in July 2016. The long time span between the delivery of our first and our last data cube made the work on the project less smooth. In addition, the data were observed at a variety of resolutions (which make comparison more difficult) and were subject of a number of calibration issues which could not be easily solved. Two visits to the Onsala Space Observatory were needed to discuss the problems in the data with the ALMA staff and to create new scripts solving all the calibration issues. All the data has now been successfully reduced and the images needed for the scientific analysis are ready. I have now acquired the needed skills to write a script that makes the analysis in different regions of multiple cubes in an automated way. I am in the process of fine tuning this script to obtain more reliable results, for instance, by adding a routine to look for line emission only in regions where the signal to noise ratio is above a certain threshold and then extract integrated flux densities. The paper describing these data is in preparation and I expect to finish it within the next few months and publish it in the first half of 2018 (FONDECYT will be properly acknowledged). The visit I made this year to Prof. Väisänen at the South African Observatory was crucial to interpret IRAS 19115-2124 data and to agree on the best way to combine the ALMA observations with the data obtained at other wavelengths. We have previously inferred that IRAS 19115-2124 could be a quadruple merger rather than a triplet, but a closer analysis and comparison with the infrared spectroscopic data show convincing evidence for having one close to edge-on ring of molecular gas rather than two separate components around the irregular galaxy previously identified in the infrared. The VLT SINFONI near-infrared (NIR) integral field unit (IFU) spectroscopy and Southern African Large Telescope (SALT) optical long-slit spectroscopy of IRAS 19115-2124 were recently published by Väisänen et al. (2017). In this paper we have found evidence of multiple stages of galaxy evolution in the same system. An off-nuclear starburst component seems to have joined an already formed merger of two spiral galaxies, one of which is quenched and shows signs of an AGN. We also took previously published HST images and we re-binned and dimmed the system to scales expected at a redshift range between 1–2. The hypothetical high-redshifted IRAS 19115- 2124 would look like a clumpy galaxy totally dominated by the off-nuclear starburst; all other details on the two major galaxies would be missed. Related to this research objective, I have also participated in a study of dusty star-forming galaxies (DSFGs) at high-redshift with ALMA. I helped in the data reduction and participated in the discussions leading to two papers: González-López et al. (2017) and Laporte et al. (2017). We observed the galaxy clusters Abell 2744, MACS J0416.1-2403 and MACS J1149.5+2223, which are part of the Frontier Fields Survey and thus have been previously observed with the HST and Spitzer among other astronomical facilities. Our ALMA observations aimed at detecting the sub- mJy population of DSFGs in these clusters at mm-wavelengths. These galaxies are thought to be the sites of the most intense starburst activity in the Universe and hence play a key role in the growth and evolution of massive galaxies across cosmic time. In González-López et al. (2017) we presented the ALMA observations and report the detection of 12 bona fide 1.1mm DSFGs with HST counterparts across the three clusters. In Laporte et al. (2017) we present the photometric analysis of the 12 DSFGs at multiple wavelengths. This allowed us to estimate their redshifts and to obtain their spectral energy distributions, which thus provided us with their stellar and dust masses. This information is of great value since the faint population of DSFGs is poorly known given the difficulty in their detection.

Research objective 3. We aimed at observing the early evolution of young CCSNe at radio and mm-wavelengths to probe the physical conditions of the CSM (such as B-field and free-electron distribution) which can be used to improve our understanding of the various CCSN subtypes whilst providing an insight on their progenitors. In the last three years I submitted various proposals to radio and mm facilities (ALMA, PdBI and VLA) to trigger observations on nearby, young CCSNe as targets of opportunity. Unfortunately no time was obtained. For this research objective, I relied on the science being done within my current collaborations, and made use of archival and director's discretionary time (DDT) observations for individual targets. The results obtained are part of the following studies: * I was part of the Public ESO Spectroscopic Survey of Transient Objects (PESSTO) group of observers following SN 2013fc, a type II SN which exploded in the circumnuclear region of the LIRG ESO 154-G010. The spectroscopic and photometric observations with the NTT at La Silla Observatory, as well as observations with other facilities, allowed the comparison of the light- curve and spectra of SN 2013fc with that of well-studied SNe. We found properties similar to prototypical type IIL and type IIn SNe. From its late-time evolution, we ind evidence for strong CSM interaction, likely pointing to a massive red supergiant progenitor. The details can be found in Kangas et al. (2016). * Type IIn SNe are characterised by a very strong interaction with a dense CSM, thus requiring that the progenitor star undergo very high mass-loss at the end of its life. We analysed good quality X-ray and radio archival data to build the light-curves of SN 2005kd in order to characterise the structure of its CSM. Both radio and X-ray emission are consistent with the expansion of SN ejecta into a high-density medium with a density proile steeper than the typically assumed r-2 and hence suggesting the star increased its mass-loss rate before explosion. Our results allowed us to narrow down the possible progenitors to either a red supergiant that turned hypergiant (given the high-mass loss), or a luminous blue variable star that underwent a giant eruption. See details in Dwarkadas, Romero-Cañizales, Reddy & Bauer (2016). * The Supernovae UNmasked By InfraRed Detection (SUNBIRD) project is a survey of 40 LIRGs aimed at, among other things, uncovering the population of CCSNe in the nuclear regions of (U)LIRGs. We observed part of the sample with the adaptive optics imager GeMS/GSAOI on Gemini South. In Kool et al. (2017)–accepted for publication in MNRAS–, we have reported the discovery of three CCSNe and one candidate at small projected distances from their galaxy hosts (≥200 pc). Radio observations did not provide any counterparts and thus we could not obtain the conditions of the circumstellar medium. However, our study is important because it provides improved constraints on the fraction of SNe missed by optical surveys. * SN 2017egm, discovered by Gaia, was initially classified as a luminous type II SN based on a low quality optical spectrum. After its re-classification as a hydrogen-poor superluminous supernova (SLSN-I) a wealth of multi-wavelength data were obtained. SLSN-I are a rare type of SNe which radiate 10–100 times more energy than normal SNe (up to ~1051 erg). They have been mostly detected in low-metallicity dwarf galaxies at z>1. SN 2017egm is not only the closest SLSN-I (by a factor of three) but it was also hosted by a massive spiral galaxy (M* ≈ 10 5x10 M⊙). We proposed DDT time to VLA and e-MERLIN. The SN is not detected in the radio, but our observations represent the most stringent upper limit to date on the radio luminosity of a SLSN-I (by a factor of 40 better than previous upper limits) at an early evolutionary stage. This allowed us to rule out an association of this SN with low-luminosity gamma ray bursts. See the details in Bose et al. (2017)–submitted to ApJ–. Within this research objective, I also started studying another type of transient which has risen a widespread interest among the astronomical community. These are the so-called TDEs (see my work, also related to research objective 1 in Romero-Cañizales et al. 2016). TDEs occur in the nuclear region of their host galaxies. SNe can also occur in galaxy nuclei, and furthermore, some nuclear transients have shown spectral signatures expected from TDEs but also from SNe, hence making their interpretation even more challenging. Adding to the general confusion, in the past, many nuclear transients were interpreted as arising from intrinsic AGN variability and have thus been neglected. Related to this topic, and as an expansion of this research objective, I also participated in the following studies: * ASASSN-15lh is a transient whose nature has been largely debated. It flared in the nuclear 10 region of a passive red galaxy with a high stellar mass (M* ≈ 2.5x10 M⊙) and a low (0.05 M⊙/yr) star formation rate. It has been considered as the most luminous SLSN ever discovered (see Godoy-Rivera et al. 2017 and references therein), with a total radiated energy an order of magnitude higher than typical SLSNe, whereas other groups sustain this transient has its origin on a TDE from a Kerr Black Hole (Leloudas et al. 2016). The population of SLSNe and TDEs is still small and their physical characteristics are poorly understood and thus, the interpretation of objects like ASASSN-15lh currently relies heavily on conclusions based on the spectral behaviour, the position of the transient with respect to the host nucleus, and the characteristics of the host (e.g., M*, SFR, galaxy type). I was part of the PESSTO group observing ASASSN-15lh at the NTT, and I was also part of the team that obtained the first radio observations of this transient (ATel by Kool et al. 2015). This work was included in Leloudas et al. (2016). * A new type of transients have been discovered in the nuclear region of Seyfert galaxies. A first object was found with a total radiated energy (~2 x 1052 erg) comparable to that of ASASSN- 15lh, occurring however in a very different host. More objects have been discovered in similar hosts, and their energy output and spectral evolution suggest two possible origins: a TDE or a highly energetic SN (as in the ASASSN-15lh case), albeit with a variant in the production mechanism given their host environment. We did not detect radio emission from these transients in archival data, either because these could be faint in radio, or because the radio evolution is not covered by the available observations. The details of this study will appear in Kankare et al. (2017)–recently accepted for publication in Nature Astronomy, and thus still embargoed–. Figure 1. Left: Contour map of IC883 at 6.9GHz from e-MERLIN observations in 2011 (Romero- Cañizales et al., 2012). The regions labelled as B1a,b and B2a,b are thermal radio counterparts of CO emission clumps, likely dominated by star formation. The region A corresponds to the 8 nucleus of the galaxy, and has a low molecular mass (2x10 M⊙) estimated from CO 2–1 observations (Zauderer et al., 2016). Right: EVN observations in 2014 at 8.4GHz, showing a close-up of region A where we have discovered a core-jet structure with a flux density of 2.14±0.24mJy for the core and 0.80±0.09mJy for the jet (Romero-Cañizales et al., 2017).

Figure 2. EVN contour map of PGC 043234 nuclear region at 5GHz (from Romero-Cañizales et al. 2016). Levels are at 13.6 μJy/beam x (-3,3,5,9,15,27)

OTHER ACHIEVEMENTS OF THE PROJECT: Research visit(s) to other institution(s). Outreach activities related to the project’s main topic. Any other contribution, not addressed elsewhere, that you consider important. The maximum length for this section is 1 page. (Arial or Verdana, font size 10).

During the time FONDECYT supported my research, I had the opportunity to visit various scientific centres abroad. This allowed me to nourish former collaborations and open new ones within the context of my project. The details of each one of the visits supported by FONDECYT can be found in the various activity reports appended to my declaration of expenses for years 2015, 2016 and 2017. Briefly, I visited the following research centres: IA, University of Cambridge, UK (16–25 Sep. 2015); Onsala Space Observatory, Sweden (25 Sep. – 4 Oct. 2015); IAA-CSIC and Universidad de Zaragoza, Spain (4-19 Oct. 2015); Jodrell Bank Centre for Astrophysics, UK (1–14 Sep. 2016); University of Turku, Finland (24 Sep. – 1 Oct. 2016); IAA- CSIC, Spain (1–9 Oct. 2016); South African Astronomical Observatory, South Africa (10 Apr. – 8 May 2017). I note I was also invited and supported by the Finnish Centre for Astronomy with ESO (FINCA) for a two-month research visit that took place between 20 January and 18 March 2017. In that visit, I worked with Prof. Seppo Mattila and his group on data and topics related to my research objectives 2 and 3 and I also travelled to the Onsala Space Observatory to solve the calibration issues of data pertaining to research objective 2.

In most of my research visits, when the time allowed for it, and also in institutions in Chile, I gave seminars to present my project and its results. In chronological order, these are: • “Dissecting a rare galaxy merger (the Hummingbird) with radio and mm-observations”, seminar at Instituto de Astrofísica de Andalucía, Spain (8 October 2015) and at Departamento de Física Teórica, Universidad de Zaragoza, Spain (15 October 2015). • “The young and obscured AGN in IC883: a GPS candidate”, seminar at Metsähovi Radio Observatory, Aalto University, Finland (15 February 2017). • “The anatomy of the Bird unveiled with ALMA”, seminar at Tuorla Observatory, University of Turku, Finland (2 March 2017). • “An extinction-free view of merging galaxies and their constituents”, colloquium at the South African Astronomical Observatory, Cape Town, South Africa (4 May 2017), and seminar at Universidad Diego Portales for the UNAB-UDP seminar series, Santiago, Chile (7 July 2017). • “Searching for radio counterparts in the transient sky”, colloquium at the Joint ALMA Observatory, Santiago, Chile (14 September 2017).

In the proposal I sent for the National Research Funding Competition back in 2014, I mentioned my will to help build Chilean expertise in interferometry during my FONDECYT project. According to this, I organised the Chilean ALMA Community day on 14 April 2015 at the Instituto de Astronomía, PUC, which was my host institute at that time. The aim was to provide the community with basic tools and information needed to prepare ALMA proposals for the cycle 3 deadline. I invited Drs. Paulo Cortés and Lizette Guzmán from the Joint ALMA Observatory and each of us imparted a talk to an audience of 20 people, mostly staff members and postdoctoral researchers from different universities in Santiago and also from Valparaíso. My talk was entitled “Basic concepts and tools for ALMA proposal preparation”. This action was received very well by the community.

In addition to presenting my project and results to the scientific community in different oral presentations and in the form of manuscripts, I also presented the core topic of my project (galaxy mergers and their associated starburst activity) to the general public. About 350 people attended the event which took place on 6 June 2017 at the Nicanor Parra Library of the Universidad Diego Portales, my current host institution. The summary of this activity can be found at http://ingenieria.udp.cl/charla-las-galaxias-con-las-salas-cuna-estelares-mas- concurridas-despedira-el-ciclo-de-astronomia-udp-del-primer-semestre/. The talk, entitled “Las galaxias con las salas cuna estelares más concurridas del Universo”, was recorded and can be found in the youtube channel of the Núcleo de Astronomía of Universidad Diego Portales: https://www.youtube.com/watch?v=APDnxT_xgfs. EVALUATION REPORT FROM POSTDOCTORAL RESEARCHER SPONSOR

SPONSOR NAME: Jose Luis Prieto (Universidad Diego Portales)

Dr. Cristina Romero-Cañizales undertook the initial 1.5 yrs of her FONDECYT postdoctoral fellowship at the Instituto de Astrofísica at Pontificia Universidad Católica de Chile (sponsor Prof. Franz Bauer) and the last 1.5 yrs of her fellowship at the Núcleo de Astronomía of the Facultad de Ingeniería y Ciencias of Universidad Diego Portales (sponsor Prof. Jose Prieto). During her fellowship, she worked on a number of supernovae-related and AGN related science topics at radio through X-ray wavelengths, as well as helped to promote a basic knowledge of interferometric techniques within her institutes, and she was also actively involved in outreach activities.

Cristina worked on high-spatial resolution radio imaging of several AGN, including investigations of NGC 3393 (Koss et al. 2015), NGC 6286 (Ricci et al. 2016), IC 883 (Romero-Cañizales et al. 2017), and IRAS 19115-2124 (Romero-Cañizales et al., in prep). Cristina also played critical roles in several supernovae (SNe) and tidal-disruption event (TDE) studies, including that of SN 2005kd (Dwarkadas et al. 2016), SN 2013fc (Kangas et al. 2016), ASASSN-14li (Romero-Cañizales et al. 2016), ASASSN-15lh (Leloudas et al. 2016), and SN 2017egm (Bose et al. 2017). Reducing and analyzing the radio interferometric data for each of these projects was particularly time-consuming, and Cristina did a meticulous job. Her efforts to lead the projects on IC 883, TDE ASASSN-14li, and the rapid radio follow-up of SN 2017egm were particularly impressive; the first led to the discovery and characterization of the least luminous and youngest gigahertz-peaked spectrum AGN to date, the second provided the first resolved radio image of a TDE host galaxy, and the third led to the most constraining upper limit on the radio luminosity of a super-luminous supernova to date.

Finally, Cristina was vital in the early success of the large ALMA Frontier Fields Project for which Prof. Bauer was PI. This was a high profile program aiming to image at 1.1mm the strongly lensing regions of 6 massive clusters to study the background sources. Cristina analyzed the initial data sets that came in for this project to help our group understand the utility of the mosaic images that we had and ultimately contributed as a co-author on the first two well-cited publications from this project (Gonzalez-Lopez et al. 2017; Laporte et al. 2017).

Based on the above, we would rate the FONDECYT fellowship of Dr. Romero-Cañizales as a great success.

Prof. Franz Bauer (PUC) Prof. Jose Prieto (UDP)

Sponsor signature

______Date: October 30th, 2017

1 PRODUCTOS

ARTÍCULOS Para trabajos en Prensa/ Aceptados/Enviados adjunte copia de carta de aceptación o de recepción.

Nº : 1 Autor (a)(es/as) : Koss, M. J.; Romero-Cañizales, C.; +Treister, E. Nombre Completo de la Revista : The Astrophysical Journal Título (Idioma original) : BROADBAND OBSERVATIONS OF THE COMPTON-THICK NUCLEUS OF NGC 3393 Indexación : WoS ISSN : 0004-637X Año : 2015 Vol. : 807 Nº : 2 Páginas : 1-18 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Koss15_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101257/1/

Nº : 2 Autor (a)(es/as) : Kangas, T.; Mattila, S.; +Romero-Cañizales, C.; +Young, D. R. Nombre Completo de la Revista : Monthly Notices of the Royal Astronomical Society Título (Idioma original) : Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: the big brother of SN 1998S Indexación : WoS ISSN : 0035-8711 Año : 2016 Vol. : 456 Nº : 1 Páginas : 323-346 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Kangas16_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101364/1/ Nº : 3 Autor (a)(es/as) : Ricci, C.; Bauer, F. E.; +Romero-Cañizales, C.; +Imanishi, M. Nombre Completo de la Revista : The Astrophysical Journal Título (Idioma original) : NuSTAR UNVEILS A HEAVILY OBSCURED LOW-LUMINOSITY ACTIVE GALACTIC NUCLEUS IN THE LUMINOUS INFRARED GALAXY NGC 6286 Indexación : WoS ISSN : 0004-637X Año : 2016 Vol. : 819 Nº : 1 Páginas : 1-13 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Ricci16_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101365/1/

Nº : 4 Autor (a)(es/as) : Dwarkadas, V. V.; Romero-Cañizales, C.; Reddy, R.; Bauer, F. E. Nombre Completo de la Revista : Monthly Notices of the Royal Astronomical Society Título (Idioma original) : X-ray and radio emission from the luminous supernova 2005kd Indexación : WoS ISSN : 0035-8711 Año : 2016 Vol. : 462 Nº : 1 Páginas : 1101-1110 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Dwarkadas16_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101366/1/

Nº : 5 Autor (a)(es/as) : Romero-Cañizales, C.; Prieto, J. L.; Chen, X.; Kochanek, C. S.; Dong, S. B.; Holoien, T. W. S.; Stanek, K. Z.; Liu, F. K. Nombre Completo de la Revista : The Astrophysical Journal Letters Título (Idioma original) : THE TDE ASASSN-14li AND ITS HOST RESOLVED AT PARSEC SCALES WITH THE EVN Indexación : WoS ISSN : 2041-8205 Año : 2016 Vol. : 832 Nº : 1 Páginas : 1-5 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Romero16_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101367/1/

Nº : 6 Autor (a)(es/as) : Leloudas, G.; Fraser, M.; +Romero-Cañizales, C.; +Young, D. R. Nombre Completo de la Revista : Nature Astronomy Título (Idioma original) : The superluminous transient ASASSN-15lh as a tidal disruption event from a Kerr black hole Indexación : WoS ISSN : 2397-3366 Año : 2016 Vol. : 1 Nº : 2 Páginas : 1-8 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Leloudas16_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101368/1/

Nº : 7 Autor (a)(es/as) : González-López, J.; Bauer, F. E.; Romero-Cañizales, C.; +Zitrin, A. Nombre Completo de la Revista : Astronomy & Astrophysics Título (Idioma original) : The ALMA Frontier Fields Survey I. 1.1mm continuum detections in Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223 Indexación : WoS ISSN : 0004-6361 Año : 2017 Vol. : 597 Nº : A41 Páginas : 1-17 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : GonzalezLopez17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101369/1/

Nº : 8 Autor (a)(es/as) : Romero-Cañizales, C.; Alberdi, A.; +Ryder, S. D. Nombre Completo de la Revista : Monthly Notices of the Royal Astronomical Society Título (Idioma original) : Unveiling the AGN in IC 883: discovery of a parsec-scale radio jet Indexación : WoS ISSN : 0035-8711 Año : 2017 Vol. : 467 Nº : 2 Páginas : 2504-2516 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Romero17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101370/1/

Nº : 9 Autor (a)(es/as) : Laporte, N.; Bauer, F. E.; +Romero-Cañizales, C.; +Zitrin, A. Nombre Completo de la Revista : Astronomy & Astrophysics Título (Idioma original) : The ALMA Frontier Fields Survey. II. Multiwavelength Photometric analysis of 1.1 mm continuum sources in Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223 Indexación : WoS ISSN : 0004-6361 Año : 2017 Vol. : 604 Nº : A132 Páginas : 1-16 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Laporte17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101371/1/

Nº : 10 Autor (a)(es/as) : Väisänen, P.; Reunanen, J.; Kotilainen, J.; Mattila, S.; Johansson, P. H.; Ramphul, R.; Romero-Cañizales, C.; Kuncarayakti, H. Nombre Completo de la Revista : Monthly Notices of the Royal Astronomical Society Título (Idioma original) : Shutting down or powering up a (U)LIRG? Merger components in distinctly different evolutionary states in IRAS 19115-2124 (the Bird) Indexación : WoS ISSN : 0035-8711 Año : 2017 Vol. : 471 Nº : 2 Páginas : 2059-2076 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Vaisanen17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101373/1/

Nº : 11 Autor (a)(es/as) : Kool, E. C.; Ryder, S.; +Romero-Cañizales, C.; Alberdi, A. Nombre Completo de la Revista : Monthly Notices of the Royal Astronomical Society Título (Idioma original) : First results from GeMS/GSAOI for project SUNBIRD: Supernovae UNmasked By Infra-Red Detection Indexación : WoS ISSN : 0035-8711 Año : 2017 Vol. : Nº : Páginas : Estado de la publicación a la fecha : En Prensa Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Kool17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101374/1/

Kool17_acceptLetter_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101374/2/

Nº : 12 Autor (a)(es/as) : Kankare, E.; Kotak R.; +Romero-Cañizales, C.; +Waters, C. Nombre Completo de la Revista : Nature Astronomy Título (Idioma original) : A population of highly energetic transient events in the centres of active galaxies Indexación : WoS ISSN : 2397-3366 Año : 2017 Vol. : Nº : Páginas : Estado de la publicación a la fecha : Aceptada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Kankare17_letter_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101375/1/

Nº : 13 Autor (a)(es/as) : Bose, S.; Dong, S.; +Romero-Cañizales, C.; +Yunus, S. Nombre Completo de la Revista : The Astrophysical Journal Título (Idioma original) : Gaia17biu/SN 2017egm in NGC 3191: the closest hydrogen-poor superluminous supernova to date is in a "normal", massive, metal-rich spiral galaxy Indexación : WoS ISSN : 0004-637X Año : 2017 Vol. : Nº : Páginas : Estado de la publicación a la fecha : Enviada Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS) Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Bose17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101376/1/

Bose17_revletter_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_articulos/descarga/24151277/3150238/2017/101376/2/

OTRAS PUBLICACIONES / PRODUCTOS

Nº : 1 Autor (a)(es/as) : Romero-Cañizales, C.; Cortés, P.; Guzmán, L. Título (Idioma original) : Chilean ALMA Community day Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : CHILE Ciudad : Santiago Fecha : Abril - 2015 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay : Instituto Milenio de Astrofísica (MAS)

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : almaDays15_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29806/1/

Nº : 2 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : Dissecting a rare galaxy merger (the Hummingbird) with radio and mm-observations Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : ESPANA Ciudad : Granada Fecha : Octubre - 2015 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_8Oct15_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29807/1/

Nº : 3 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : Dissecting a rare galaxy merger (the Hummingbird) with radio and mm-observations Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : ESPANA Ciudad : Zaragoza Fecha : Octubre - 2015 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_15Oct15_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29808/1/

Nº : 4 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : The young and obscured AGN in IC883: a GPS candidate Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : FINLANDIA Ciudad : Kirkkonummi Fecha : Febrero - 2017 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_15Feb17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29809/1/

Nº : 5 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : The anatomy of the Bird unveiled with ALMA Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : FINLANDIA Ciudad : Turku Fecha : Marzo - 2017 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_2Mar17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29810/1/

Nº : 6 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : An extinction-free view of merging galaxies and their constituents Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : SUR AFRICA Ciudad : Cape Town Fecha : Mayo - 2017 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_4May17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29811/1/

Nº : 7 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : An extinction-free view of merging galaxies and their constituents Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : CHILE Ciudad : Santiago Fecha : Julio - 2017 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_7Jul17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29812/1/ Nº : 8 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : Searching for radio counterparts in the transient sky Tipo de publicación o producto : Seminario/Taller/Curso ISBN : Editor (es) (Libro o Capitulo de libros) : Nombre de la editorial /Organización : País : CHILE Ciudad : Santiago Fecha : Septiembre - 2017 Año : Vol. : Nº : Páginas : Otras Fuentes de financiamiento, si las hay :

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : seminar_14Sept17_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_otras_publicaciones/descarga/24151277/3150238/2017/29813/1/

CONGRESOS

Nº : 1 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : Dissecting a rare triple galaxy merger: radio and mm-observations toward the Bird Nombre del Congreso : ESO workshop "Dissecting Galaxies Near and Far: High Resolution Views of Star Formation and the ISM" País : CHILE Ciudad : Santiago Fecha Inicio : 23/03/2015 Fecha Término : 27/03/2015 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : ESOconf15_cover_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160290/1/

ESOconf15_abstract_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160290/2/ Nº : 2 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : "Resolving LIRG nuclei with VLBI" & An extinction-free view of the Hummingbird – ALMA and VLA observations Nombre del Congreso : Workshop "Sharp Eyes on European Skies" País : REINO UNIDO DE GB E IRLANDA DEL NORTE Ciudad : Belfast Fecha Inicio : 23/09/2015 Fecha Término : 25/09/2015 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : SEES15_cover_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160292/1/

SEES15_program_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160292/2/

Nº : 3 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : AGN activity in the advanced merger IC883 Nombre del Congreso : XIII Annual meeting of the Chilean Astronomical Society (SOCHIAS) País : CHILE Ciudad : Antofagasta Fecha Inicio : 01/03/2016 Fecha Término : 04/03/2016 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : SOCHIAS16_cover_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160294/1/

SOCHIAS16_abstract_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160294/2/

Nº : 4 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : AGN activity in the advanced merger IC883 Nombre del Congreso : The Interplay Between Local and Global Processes in Galaxies País : MEXICO Ciudad : Cozumel Fecha Inicio : 11/04/2016 Fecha Término : 15/04/2016 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Galaxies16_cover_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160295/1/

Galaxies16_program_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160295/2/ poster_cozumel_letter_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160295/3/

Nº : 5 Autor (a)(es/as) : Romero-Cañizales, C.; Alberdi, A.; Ricci, C.; + Título (Idioma original) : IC883 and PGC043234: the stories of steady and intermittent accretion onto a SMBH Nombre del Congreso : 13th European VLBI Network Symposium and Users Meeting País : RUSIA, FEDERACION Ciudad : St. Petersburg Fecha Inicio : 19/09/2016 Fecha Término : 23/09/2016 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : EVN16_cover_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160297/1/

EVN16_abstract_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160297/2/

Nº : 6 Autor (a)(es/as) : Romero-Cañizales, C. Título (Idioma original) : ASASSN-14li: The awakening of an AGN Nombre del Congreso : Tuorla – Tartu meeting 2016 País : FINLANDIA Ciudad : Turku Fecha Inicio : 28/09/2016 Fecha Término : 30/09/2016 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : TT16_cover_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160298/1/

TT16_program_v14.pdf https://servicios.conicyt.cl/sial/index.php/investigador/f4_congresos/descarga/24151277/3150238/2017/160298/2/

ANEXOS

A continuación se detallan los anexos físicos/papel que no se incluyen en el informe en formato PDF. This postdoctoral project is based on the analysis of astronomical data, and thus, none of the subjects described in this section are related to this work.