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Science Goals and Selection Criteria
University of Groningen The ATLAS(3D) project Cappellari, Michele; Emsellem, Eric; Krajnovic, Davor; McDermid, Richard M.; Scott, Nicholas; Kleijn, G. A. Verdoes; Young, Lisa M.; Alatalo, Katherine; Bacon, R.; Blitz, Leo Published in: Monthly Notices of the Royal Astronomical Society DOI: 10.1111/j.1365-2966.2010.18174.x IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 2011 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Cappellari, M., Emsellem, E., Krajnovic, D., McDermid, R. M., Scott, N., Kleijn, G. A. V., Young, L. M., Alatalo, K., Bacon, R., Blitz, L., Bois, M., Bournaud, F., Bureau, M., Davies, R. L., Davis, T. A., de Zeeuw, P. T., Duc, P-A., Khochfar, S., Kuntschner, H., ... Weijmans, A-M. (2011). The ATLAS(3D) project: I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria. Monthly Notices of the Royal Astronomical Society, 413(2), 813-836. https://doi.org/10.1111/j.1365- 2966.2010.18174.x Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). The publication may also be distributed here under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license. -
The Young Nuclear Stellar Disc in the SB0 Galaxy NGC 1023
MNRAS 457, 1198–1207 (2016) doi:10.1093/mnras/stv2864 The young nuclear stellar disc in the SB0 galaxy NGC 1023 E. M. Corsini,1,2‹ L. Morelli,1,2 N. Pastorello,3 E. Dalla Bonta,` 1,2 A. Pizzella1,2 and E. Portaluri2 1Dipartimento di Fisica e Astronomia ‘G. Galilei’, Universita` di Padova, vicolo dell’Osservatorio 3, I-35122 Padova, Italy 2INAF–Osservatorio Astronomico di Padova, vicolo dell’Osservatorio 5, I-35122 Padova, Italy 3Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, VIC 3122, Australia Accepted 2015 December 3. Received 2015 November 5; in original form 2015 September 11 Downloaded from ABSTRACT Small kinematically decoupled stellar discs with scalelengths of a few tens of parsec are known to reside in the centre of galaxies. Different mechanisms have been proposed to explain how they form, including gas dissipation and merging of globular clusters. Using archival Hubble Space Telescope imaging and ground-based integral-field spectroscopy, we investigated the http://mnras.oxfordjournals.org/ structure and stellar populations of the nuclear stellar disc hosted in the interacting SB0 galaxy NGC 1023. The stars of the nuclear disc are remarkably younger and more metal rich with respect to the host bulge. These findings support a scenario in which the nuclear disc is the end result of star formation in metal enriched gas piled up in the galaxy centre. The gas can be of either internal or external origin, i.e. from either the main disc of NGC 1023 or the nearby satellite galaxy NGC 1023A. The dissipationless formation of the nuclear disc from already formed stars, through the migration and accretion of star clusters into the galactic centre, is rejected. -
Thesis University of Western Australia
Kinematic and Environmental Regulation of Atomic Gas in Galaxies Jie Li March 2019 Master Thesis University of Western Australia Supervisors: Dr. Danail Obreschkow Dr. Claudia Lagos Dr. Charlotte Welker 20/05/2019 Acknowledgments I would like to thank my supervisors Danail Obreschkow, Claudia Lagos and Charlotte Welker for their guidance and support during this project, Luca Cortese, Robert Dˇzudˇzar and Garima Chauhan for their useful suggestions, my parents for giving me financial support and love, and ICRAR for o↵ering an open and friendly environments. Abstract Recent studies of neutral atomic hydrogen (H i) in nearby galaxies find that all isolated star-forming disk-dominated galaxies, from low-mass dwarfs to massive spirals systems, are H i saturated, in that they carry roughly (within a factor 1.5) as much H i fraction as permitted before this gas becomes gravitationally unstable. By taking this H i saturation for granted, the atomic gas fraction fatm of galactic disks can be predicted as a function of a stability parameter q j/M,whereM and j are the baryonic mass and specific / angular momentum of the disk (Obreschkow et al., 2016). The (logarithmic) di↵erence ∆fq between this predictor and the observed atomic fraction can thus be seen as a physically motivated way of defining a ‘H i deficiency’. While isolated disk galaxies have ∆f 0, q ⇡ objects subject to environmental removal/suppression of H i are expected to have ∆fq > 0. Within this framework, we revisit the H i deficiencies of satellite galaxies in the Virgo cluster (from the VIVA sample), as well as in clusters of the EAGLE simulation. -
Nuclear Stellar Discs in Low-Luminosity Elliptical Galaxies: NGC 4458 and 4478 L
Mon. Not. R. Astron. Soc. 354, 753–762 (2004) doi:10.1111/j.1365-2966.2004.08236.x Nuclear stellar discs in low-luminosity elliptical galaxies: NGC 4458 and 4478 L. Morelli,1,2 C. Halliday,3 E. M. Corsini,1 A. Pizzella,1 D. Thomas,4 R. P. Saglia,4 R. L. Davies,5 R. Bender,4,6 M. Birkinshaw7 and F. Bertola1 1Dipartimento di Astronomia, Universitad` iPadova, vicolo dell’Osservatorio 2, I-35122 Padova, Italy 2European Southern Observatory, 3107 Alonso de Cordova, Santiago, Chile 3INAF-Osservatorio Astronomico di Padova, vicolo dell’Osservatorio 5, I-35122 Padova, Italy 4Max-Planck Institut fur¨ extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching, Germany 5Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH 6Universitas-Sternwarte,¨ Scheinerstrasse 1, D-81679 Muenchen, Germany 7H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL Accepted 2004 July 19. Received 2004 July 12; in original form 2004 May 12 ABSTRACT We present the detection of nuclear stellar discs in the low-luminosity elliptical galaxies, NGC 4458 and 4478, which are known to host a kinematically decoupled core. Using archival Hubble Space Telescope imaging, and available absorption line-strength index data based on ground-based spectroscopy, we investigate the photometric parameters and the properties of the stellar populations of these central structures. Their scalelength, h, and face-on central surface µc µc brightness, 0,fitonthe 0 –h relation for galaxy discs. For NGC 4458, these parameters are typical for nuclear discs, while the same quantities for NGC 4478 lie between those of nuclear discs and the discs of discy ellipticals. -
Stellar Tidal Streams As Cosmological Diagnostics: Comparing Data and Simulations at Low Galactic Scales
RUPRECHT-KARLS-UNIVERSITÄT HEIDELBERG DOCTORAL THESIS Stellar Tidal Streams as Cosmological Diagnostics: Comparing data and simulations at low galactic scales Author: Referees: Gustavo MORALES Prof. Dr. Eva K. GREBEL Prof. Dr. Volker SPRINGEL Astronomisches Rechen-Institut Heidelberg Graduate School of Fundamental Physics Department of Physics and Astronomy 14th May, 2018 ii DISSERTATION submitted to the Combined Faculties of the Natural Sciences and Mathematics of the Ruperto-Carola-University of Heidelberg, Germany for the degree of DOCTOR OF NATURAL SCIENCES Put forward by GUSTAVO MORALES born in Copiapo ORAL EXAMINATION ON JULY 26, 2018 iii Stellar Tidal Streams as Cosmological Diagnostics: Comparing data and simulations at low galactic scales Referees: Prof. Dr. Eva K. GREBEL Prof. Dr. Volker SPRINGEL iv NOTE: Some parts of the written contents of this thesis have been adapted from a paper submitted as a co-authored scientific publication to the Astronomy & Astrophysics Journal: Morales et al. (2018). v NOTE: Some parts of this thesis have been adapted from a paper accepted for publi- cation in the Astronomy & Astrophysics Journal: Morales, G. et al. (2018). “Systematic search for tidal features around nearby galaxies: I. Enhanced SDSS imaging of the Local Volume". arXiv:1804.03330. DOI: 10.1051/0004-6361/201732271 vii Abstract In hierarchical models of galaxy formation, stellar tidal streams are expected around most galaxies. Although these features may provide useful diagnostics of the LCDM model, their observational properties remain poorly constrained. Statistical analysis of the counts and properties of such features is of interest for a direct comparison against results from numeri- cal simulations. In this work, we aim to study systematically the frequency of occurrence and other observational properties of tidal features around nearby galaxies. -
The ACS Virgo Cluster Survey. VI. Isophotal Analysis and The
Rochester Institute of Technology RIT Scholar Works Articles 2006 The CA S Virgo Cluster Survey. VI. Isophotal Analysis and the Structure of Early-Type Galaxies Laura Ferrarese Patrick Cote Andres Jordan Follow this and additional works at: http://scholarworks.rit.edu/article Recommended Citation Astrophysical Journal Supplement Series 164 (2006) 334-434 This Article is brought to you for free and open access by RIT Scholar Works. It has been accepted for inclusion in Articles by an authorized administrator of RIT Scholar Works. For more information, please contact [email protected]. Accepted by The Astrophysical Journal Supplements Preprint typeset using LATEX style emulateapj v. 10/10/03 THE ACS VIRGO CLUSTER SURVEY. VI. ISOPHOTAL ANALYSIS AND THE STRUCTURE OF EARLY-TYPE GALAXIES1 Laura Ferrarese2, Patrick Cotˆ e´2, Andres´ Jordan´ 3,4, Eric W. Peng2, John P. Blakeslee5,6, Slawomir Piatek7, Simona Mei5, David Merritt8, Miloˇs Milosavljevic´9,10, John L. Tonry11, & Michael J. West12 Accepted by The Astrophysical Journal Supplements ABSTRACT We present a detailed analysis of the morphology, isophotal parameters and surface brightness profiles for 100 early-type members of the Virgo Cluster, from dwarfs (MB = −15.1 mag) to giants (MB = −21.8 mag). Each galaxy has been imaged in two filters, closely resembling the Sloan g and z passbands, using the Advanced Camera for Surveys on board the Hubble Space Telescope. Dust and complex morphological structures are common. Dust is detected in as many as 18, prefer- entially bright, galaxies. The incidence rate in the 26 galaxies brighter than BT = 12.15 mag, which form a magnitude limited sample, is 42%. -
Virgo the Virgin
Virgo the Virgin Virgo is one of the constellations of the zodiac, the group tion Virgo itself. There is also the connection here with of 12 constellations that lies on the ecliptic plane defined “The Scales of Justice” and the sign Libra which lies next by the planets orbital orientation around the Sun. Virgo is to Virgo in the Zodiac. The study of astronomy had a one of the original 48 constellations charted by Ptolemy. practical “time keeping” aspect in the cultures of ancient It is the largest constellation of the Zodiac and the sec- history and as the stars of Virgo appeared before sunrise ond - largest constellation after Hydra. Virgo is bordered by late in the northern summer, many cultures linked this the constellations of Bootes, Coma Berenices, Leo, Crater, asterism with crops, harvest and fecundity. Corvus, Hydra, Libra and Serpens Caput. The constella- tion of Virgo is highly populated with galaxies and there Virgo is usually depicted with angel - like wings, with an are several galaxy clusters located within its boundaries, ear of wheat in her left hand, marked by the bright star each of which is home to hundreds or even thousands of Spica, which is Latin for “ear of grain”, and a tall blade of galaxies. The accepted abbreviation when enumerating grass, or a palm frond, in her right hand. Spica will be objects within the constellation is Vir, the genitive form is important for us in navigating Virgo in the modern night Virginis and meteor showers that appear to originate from sky. Spica was most likely the star that helped the Greek Virgo are called Virginids. -
New Lessons from the HI Size-Mass Relation of Galaxies 3
Mon. Not. R. Astron. Soc. 000, 000–000 (2014) Printed 6 May 2016 (MN LATEX style file v2.2) New Lessons from the HI Size-Mass Relation of Galaxies Jing Wang1⋆, B¨arbel S. Koribalski1, Paolo Serra1, Thijs van der Hulst2, Sambit Roychowdhury3, Peter Kamphuis1,4, Jayaram N. Chengalur4 1Australia Telescope National Facility, CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia 2University of Groningen, Kapteyn Astronomical Institute, Landleven 12, 9747 AD, Groningen, The Netherlands 3Max-Planck Institut f¨ur Astrophysik, D-85748 Garching, Germany 4National Centre for Radio Astrophysics, TIFR, Ganeshkhind, Pune 411007, India Accepted 2014 ???? ?? Received 2014 ???? ??; in original form 2014 January ABSTRACT We revisit the Hi size-mass (DHI-MHI) relation of galaxies with a sample of more than 500 nearby galaxies covering over five orders of magnitude in Hi mass and more than ten B-band magnitudes. The relation is remarkably tight with a scatter σ ∼0.06 dex, or 14%. The scatter does not change as a function of galaxy luminosity, Hi richness or morphological type. The relation is linked to the fact that dwarf and spiral galaxies have a homogenous radial profile of Hi surface density in the outer regions when the radius is normalised by DHI. The early-type disk galaxies typically have shallower Hi radial profiles, indicating a different gas accretion history. We argue that the process of atomic-to-molecular gas conversion or star formation cannot explain the tightness of the DHI-MHI relation. This simple relation puts strong constraints on simulation models for galaxy formation. Key words: intergalactic medium; galaxies 1 INTRODUCTION samples: Verheijen & Sancisi. -
An Ultra-Deep Survey of Low Surface Brightness Galaxies in Virgo
' $ An Ultra-Deep Survey of Low Surface Brightness Galaxies in Virgo Elizabeth Helen (Lesa) Moore, BSc(Hons) Department of Physics Macquarie University May 2008 This thesis is presented for the degree of Master of Philosophy in Physics & % iii Dedicated to all the sentient beings living in galaxies in the Virgo Cluster iv CONTENTS Synopsis : :::::::::::::::::::::::::::::::::::::: xvii Statement by Candidate :::::::::::::::::::::::::::::: xviii Acknowledgements ::::::::::::::::::::::::::::::::: xix 1. Introduction ::::::::::::::::::::::::::::::::::: 1 2. Low Surface Brightness (LSB) Galaxies :::::::::::::::::::: 5 2.1 Surface Brightness and LSB Galaxies De¯ned . 6 2.2 Physical Properties and Morphology . 8 2.3 Cluster and Field Distribution of LSB Dwarfs . 14 2.4 Galaxies, Cosmology and Clustering . 16 3. Galaxies and the Virgo Cluster :::::::::::::::::::::::: 19 3.1 Importance of the Virgo Cluster . 19 3.2 Galaxy Classi¯cation . 20 3.3 Virgo Galaxy Surveys and Catalogues . 24 3.4 Properties of the Virgo Cluster . 37 3.4.1 Velocity Distribution in the Direction of the Virgo Cluster . 37 3.4.2 Distance and 3D Structure . 38 vi Contents 3.4.3 Galaxy Population . 42 3.4.4 The Intra-Cluster Medium . 45 3.4.5 E®ects of the Cluster Environment . 47 4. Virgo Cluster Membership and the Luminosity Function :::::::::: 53 4.1 The Schechter Luminosity Function . 54 4.2 The Dwarf-to-Giant Ratio (DGR) . 58 4.3 Galaxy Detection . 59 4.4 Survey Completeness . 62 4.5 Virgo Cluster Membership . 63 4.5.1 Radial Velocities . 64 4.5.2 Morphology . 65 4.5.3 Concentration Parameters . 66 4.5.4 Scale Length Limits . 68 4.5.5 The Rines-Geller Threshold . -
The List Is Compiled in “Constellation by Right Ascension, Right Ascension Within Constellation”, Order
The following list is a result of too many nights racing through Messier marathons, wandering through the Herschel 400, scanning the southern horizon for unexpected treasures, star-hopping for invisible faint fuzzies, and finally, finding myself at the helm of a 22-inch Go-To telescope, not knowing what to look at next! You’ll no doubt recognize many of the objects I’ve included. Many are the finest, most visited, destinations in the night sky. Some are the best in their class, although they may still seem a challenge with apertures under 20 inches. A few will make you yearn for your old 3-inch refractor, or dark skies from your earliest deep sky memories. The list is compiled in “constellation by right ascension, right ascension within constellation”, order. If you use digital setting circles or a driven Go- To telescope, you’ll appreciate the “by constellation” tasking. The SkyQ designation rates the objects first by sky quality (naked-eye limiting magnitude 4-5-6+ was what I had in mind, it varies...), and exclamation marks flag objects that are particularly notable. For double and multiple stars, judge your night and your telescope on the Size/Sep column. Remarks are mostly from old notes scribbled at the eyepiece of a 20-inch Dobsonian or a 5-inch richest field refractor. Some notes were culled from other observer’s posts, periodicals, and numerous texts. Positional elements for all NGC and IC objects are epoch 2000, stellar positional elements are mixed. Current separations for double stars are estimated for 2000 (some are surprising if you’ve been observing true binaries for 30 years!) The farthest south object in the list is Alpha Centauri, followed closely by Eta Carina. -
X-Ray Luminosities for a Magnitude-Limited Sample of Early-Type Galaxies from the ROSAT All-Sky Survey
Mon. Not. R. Astron. Soc. 302, 209±221 (1999) X-ray luminosities for a magnitude-limited sample of early-type galaxies from the ROSAT All-Sky Survey J. Beuing,1* S. DoÈbereiner,2 H. BoÈhringer2 and R. Bender1 1UniversitaÈts-Sternwarte MuÈnchen, Scheinerstrasse 1, D-81679 MuÈnchen, Germany 2Max-Planck-Institut fuÈr Extraterrestrische Physik, D-85740 Garching bei MuÈnchen, Germany Accepted 1998 August 3. Received 1998 June 1; in original form 1997 December 30 Downloaded from https://academic.oup.com/mnras/article/302/2/209/968033 by guest on 30 September 2021 ABSTRACT For a magnitude-limited optical sample (BT # 13:5 mag) of early-type galaxies, we have derived X-ray luminosities from the ROSATAll-Sky Survey. The results are 101 detections and 192 useful upper limits in the range from 1036 to 1044 erg s1. For most of the galaxies no X-ray data have been available until now. On the basis of this sample with its full sky coverage, we ®nd no galaxy with an unusually low ¯ux from discrete emitters. Below log LB < 9:2L( the X-ray emission is compatible with being entirely due to discrete sources. Above log LB < 11:2L( no galaxy with only discrete emission is found. We further con®rm earlier ®ndings that Lx is strongly correlated with LB. Over the entire data range the slope is found to be 2:23 60:12. We also ®nd a luminosity dependence of this correlation. Below 1 log Lx 40:5 erg s it is consistent with a slope of 1, as expected from discrete emission. -
ARRAKIS: Atlas of Resonance Rings As Known in The
Astronomy & Astrophysics manuscript no. arrakis˙v12 c ESO 2018 September 28, 2018 ARRAKIS: atlas of resonance rings as known in the S4G⋆,⋆⋆ S. Comer´on1,2,3, H. Salo1, E. Laurikainen1,2, J. H. Knapen4,5, R. J. Buta6, M. Herrera-Endoqui1, J. Laine1, B. W. Holwerda7, K. Sheth8, M. W. Regan9, J. L. Hinz10, J. C. Mu˜noz-Mateos11, A. Gil de Paz12, K. Men´endez-Delmestre13 , M. Seibert14, T. Mizusawa8,15, T. Kim8,11,14,16, S. Erroz-Ferrer4,5, D. A. Gadotti10, E. Athanassoula17, A. Bosma17, and L.C.Ho14,18 1 University of Oulu, Astronomy Division, Department of Physics, P.O. Box 3000, FIN-90014, Finland e-mail: [email protected] 2 Finnish Centre of Astronomy with ESO (FINCA), University of Turku, V¨ais¨al¨antie 20, FI-21500, Piikki¨o, Finland 3 Korea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 305-348, Republic of Korea 4 Instituto de Astrof´ısica de Canarias, E-38205 La Laguna, Tenerife, Spain 5 Departamento de Astrof´ısica, Universidad de La Laguna, E-38200, La Laguna, Tenerife, Spain 6 Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487 7 European Space Agency, ESTEC, Keplerlaan 1, 2200 AG, Noorwijk, the Netherlands 8 National Radio Astronomy Observatory/NAASC, 520 Edgemont Road, Charlottesville, VA 22903, USA 9 Space Telescope Science Institute, 3700 San Antonio Drive, Baltimore, MD 21218, USA 10 European Southern Observatory, Casilla 19001, Santiago 19, Chile 11 MMTO, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA 12 Departamento de Astrof´ısica,