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The Possible Detection of a Binary Companion to a Type Ibn Supernova Progenitor J
The Astrophysical Journal, 833:128 (6pp), 2016 December 20 doi:10.3847/1538-4357/833/2/128 © 2016. The American Astronomical Society. All rights reserved. THE POSSIBLE DETECTION OF A BINARY COMPANION TO A TYPE IBN SUPERNOVA PROGENITOR J. R. Maund1,7, A. Pastorello2, S. Mattila3,4, K. Itagaki5, and T. Boles6 1 Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK 2 INAF—Osservatorio Astronomico di Padova. Vicolo Osservatorio 5, I-35122, Padova, Italy 3 Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, FI-21500 Piikkiö, Finland 4 Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, FI-21500 Piikkiö, Finland 5 Itagaki Astronomical Observatory, Teppo-cho, 990-2492 Yamagata, Japan 6 Coddenham Astronomical Observatory, Suffolk IP6 9QY, UK Received 2016 April 28; revised 2016 August 23; accepted 2016 September 20; published 2016 December 13 ABSTRACT We present late-time observations of the site of the Type Ibn supernova (SN) 2006jc, acquired with the Hubble Space Telescope Advanced Camera for Surveys. A faint blue source is recovered at the SN position, with brightness mFW435 =26.76 0.20, mFW555 =26.60 0.23 and mFW625 =26.32 0.19 mag, although there is no detection in a contemporaneous narrow-band Ha image. The spectral energy distribution of the late-time source is well-fit by a stellar-like spectrum (logTeff > 3.7 and log LL > 4), subject to only a small degree of reddening —consistent with that estimated for SN2006jc itself at early-times. The lack of further outbursts after the explosion of SN2006jc suggests that the precursor outburst originated from the progenitor. -
Biennial Report 2006 2007 Published in Spain by the Isaac Newton Group of Telescopes (ING) ISSN 1575–8966 Legal License: TF–1142 /99
I SAAC N EWTON G ROUP OF T ELESCOPES Biennial Report 2006 2007 Published in Spain by the Isaac Newton Group of Telescopes (ING) ISSN 1575–8966 Legal license: TF–1142 /99 Apartado de correos, 321 E-38700 Santa Cruz de La Palma; Canary Islands; Spain Tel: +34 922 425 400 Fax: +34 922 425 401 URL: http://www.ing.iac.es/ Editor and designer: Javier Méndez ([email protected]) Printing: Gráficas Sabater. Tel: +34 922 623 555 Front cover: The Milky Way from the site of the William Herschel Telescope. Credit: Nik Szymanek. Inset: Photograph of the WHT at sunset. Credit: Nik Szymanek. Other picture credits: Nik Szymanek (WHT, p. 4; INT, p. 4; JKT, p. 4; ING, p. 5); Jens Moser (WHT, back; INT, back); Nik Szymanek (JKT, back). The ING Biennial Report is available online at http://www.ing.iac.es/PR/AR/. ISAAC NEWTON GROUP OF TELESCOPES Biennial Report of the STFC-NWO-IAC ING Board 2006 – 2007 ISAAC NEWTON GROUP William Herschel Telescope Isaac Newton Telescope Jacobus Kapteyn Telescope 4 • ING BIENNIAL R EPORT 2006–2007 OF TELESCOPES The Isaac Newton Group of Telescopes (ING) consists of the 4.2- metre William Herschel Telescope (WHT), the 2.5-metre Isaac Newton Telescope (INT) and the 1.0-metre Jacobus Kapteyn Telescope (JKT). The ING is located 2350 metres above sea level at the Observatorio del Roque de los Muchachos (ORM) on the island of La Palma, Canary Islands, Spain. The WHT is the largest telescope of its kind in Western Europe. The construction, operation, and development of the ING telescopes are the result of a collaboration between the United Kingdom, The Netherlands and Spain. -
TYPE Ibn SUPERNOVAE SHOW PHOTOMETRIC HOMOGENEITY
Draft version August 23, 2016 Preprint typeset using LATEX style emulateapj v. 01/23/15 TYPE Ibn SUPERNOVAE SHOW PHOTOMETRIC HOMOGENEITY AND SPECTRAL DIVERSITY AT MAXIMUM LIGHT EVIDENCE FOR TWO SPECTRAL SUBCLASSES Griffin Hosseinzadeh1,2,*, Iair Arcavi1,3, Stefano Valenti4, Curtis McCully1,2, D. Andrew Howell1,2, Joel Johansson5, Jesper Sollerman6, Andrea Pastorello7, Stefano Benetti7, Yi Cao8, S. Bradley Cenko9,10, KelseyI. Clubb 11, Alessandra Corsi12, Gina Duggan8, Nancy Elias-Rosa7, Alexei V. Filippenko11, Ori D. Fox13, Christoffer Fremling6, Assaf Horesh8, Emir Karamehmetoglu6, Mansi Kasliwal8, G. H. Marion14, Eran Ofek5, David Sand12, Francesco Taddia6, WeiKang Zheng11, Morgan Fraser15, Avishay Gal-Yam5, Cosimo Inserra16, Russ Laher17, Frank Masci17, Umaa Rebbapragada18, Stephen Smartt16, Ken W. Smith16, Mark Sullivan19, Jason Surace17, Przemek Wo´zniak20 1Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr Ste 102, Goleta, CA 93117-5575, USA 2Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA 3Kavli Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106-4030, USA 4Department of Physics, University of California, 1 Shields Ave, Davis, CA 95616-5270, USA 5Department of Particle Physics and Astrophysics, Weizmann Institute of Science, 76100 Rehovot, Israel 6Oskar Klein Centre, Department of Astronomy, Stockholm University, Albanova University Centre, SE-106 91 Stockholm, Sweden 7INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, -
Space Traveler 1St Wikibook!
Space Traveler 1st WikiBook! PDF generated using the open source mwlib toolkit. See http://code.pediapress.com/ for more information. PDF generated at: Fri, 25 Jan 2013 01:31:25 UTC Contents Articles Centaurus A 1 Andromeda Galaxy 7 Pleiades 20 Orion (constellation) 26 Orion Nebula 37 Eta Carinae 47 Comet Hale–Bopp 55 Alvarez hypothesis 64 References Article Sources and Contributors 67 Image Sources, Licenses and Contributors 69 Article Licenses License 71 Centaurus A 1 Centaurus A Centaurus A Centaurus A (NGC 5128) Observation data (J2000 epoch) Constellation Centaurus [1] Right ascension 13h 25m 27.6s [1] Declination -43° 01′ 09″ [1] Redshift 547 ± 5 km/s [2][1][3][4][5] Distance 10-16 Mly (3-5 Mpc) [1] [6] Type S0 pec or Ep [1] Apparent dimensions (V) 25′.7 × 20′.0 [7][8] Apparent magnitude (V) 6.84 Notable features Unusual dust lane Other designations [1] [1] [1] [9] NGC 5128, Arp 153, PGC 46957, 4U 1322-42, Caldwell 77 Centaurus A (also known as NGC 5128 or Caldwell 77) is a prominent galaxy in the constellation of Centaurus. There is considerable debate in the literature regarding the galaxy's fundamental properties such as its Hubble type (lenticular galaxy or a giant elliptical galaxy)[6] and distance (10-16 million light-years).[2][1][3][4][5] NGC 5128 is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers.[10] The galaxy is also the fifth brightest in the sky,[10] making it an ideal amateur astronomy target,[11] although the galaxy is only visible from low northern latitudes and the southern hemisphere. -
Metallicity at the Explosion Sites of Interacting Transients⋆⋆⋆
A&A 580, A131 (2015) Astronomy DOI: 10.1051/0004-6361/201525989 & c ESO 2015 Astrophysics Metallicity at the explosion sites of interacting transients F. Taddia1, J. Sollerman1, C. Fremling1, A. Pastorello2, G. Leloudas3,4, C. Fransson1, A. Nyholm1, M. D. Stritzinger5, M. Ergon1,R.Roy1, and K. Migotto1 1 The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, 10691 Stockholm, Sweden e-mail: [email protected] 2 INAF–Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, 35122 Padova, Italy 3 Department of Particle Physics & Astrophysics, Weizmann Institute of Science, Rehovot 76100, Israel 4 Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark 5 Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark Received 28 February 2015 / Accepted 28 May 2015 ABSTRACT Context. Some circumstellar-interacting (CSI) supernovae (SNe) are produced by the explosions of massive stars that have lost mass shortly before the SN explosion. There is evidence that the precursors of some SNe IIn were luminous blue variable (LBV) stars. For a small number of CSI SNe, outbursts have been observed before the SN explosion. Eruptive events of massive stars are named SN impostors (SN IMs) and whether they herald a forthcoming SN or not is still unclear. The large variety of observational properties of CSI SNe suggests the existence of other progenitors, such as red supergiant (RSG) stars with superwinds. Furthermore, the role of metallicity in the mass loss of CSI SN progenitors is still largely unexplored. Aims. Our goal is to gain insight into the nature of the progenitor stars of CSI SNe by studying their environments, in particular the metallicity at their locations. -
Massive Stars: Life and Death
Massive Stars: Life and Death Dissertation Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Jos´eLuis Prieto Katunari´c Graduate Program in Astronomy The Ohio State University 2009 Dissertation Committee: Professor Krzysztof Z. Stanek, Advisor Professor Christopher S. Kochanek Professor John F. Beacom Copyright by Jos´eL. Prieto 2009 ABSTRACT Although small in number, massive stars are critical to the formation and evolution of galaxies. They shape the interstellar medium of galaxies through their strong winds and ultra-violet radiation, are a major source of the heavy elements enriching the interstellar medium, and are the progenitors of core-collapse supernovae and gamma-ray bursts, which are among the most energetic explosions in the Universe and mark the death of a massive star. Still, our understanding of the connection between massive stars and supernovae from observations is fairly limited. In this dissertation, I present new observational evidence that shows the importance of metallicity, mass-loss, and binarity in the lives and deaths of massive stars. We investigate how the different types of supernovae are relatively affected by the metallicity of their host galaxy. We take advantage of the large number of spectra of star-forming galaxies obtained by the Sloan Digital Sky Survey and their overlap with supernova host galaxies. We find strong evidence that type Ib/c supernovae are occurring in higher-metallicity host galaxies than type II supernovae. We discuss various implications of our findings for understanding supernova progenitors and their host galaxies, including interesting supernovae found in low-metallicity hosts. -
UC Santa Barbara UC Santa Barbara Electronic Theses and Dissertations
UC Santa Barbara UC Santa Barbara Electronic Theses and Dissertations Title Probing Late-Stage Stellar Evolution Through Robotic Follow-Up of Nearby Supernovae Permalink https://escholarship.org/uc/item/5xx0v1js Author Hosseinzadeh, Griffin Publication Date 2018 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California University of California Santa Barbara Probing Late-Stage Stellar Evolution Through Robotic Follow-Up of Nearby Supernovae A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Physics by Griffin A. Hosseinzadeh Committee in charge: Professor D. Andrew Howell, Co-Chair Professor Lars Bildsten, Co-Chair Professor Crystal L. Martin Professor Benjamin A. Mazin June 2018 The dissertation of Griffin A. Hosseinzadeh is approved. Professor Crystal L. Martin Professor Benjamin A. Mazin Professor Lars Bildsten, Committee Co-Chair Professor D. Andrew Howell, Committee Co-Chair June 2018 Probing Late-Stage Stellar Evolution Through Robotic Follow-Up of Nearby Supernovae Copyright c 2018 by Griffin A. Hosseinzadeh iii To my mother, UCSB alumna, class of 1972, with whom I first visited Santa Barbara and who sparked my interest in space with Star Trek: The Next Generation. iv Acknowledgements The work contained in this dissertation is the result of collaboration with many people, but in particular, I thank my advisor, Prof. Andy Howell, and the current and former postdocs in my research group, Prof. Stefano Valenti (now at UC Davis), Prof. Iair Arcavi (soon to be at Tel Aviv University), and Dr. Curtis McCully (now a research scientist at Las Cumbres Observatory) for teaching me everything I know about astronomy. -
LIGHT CURVES for SUPERNOVA SN2006JC by Jonathan P. Daniels
LIGHT CURVES FOR SUPERNOVA SN2006JC by Jonathan P. Daniels Jr. A senior thesis submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of Bachelor of Science Department of Physics and Astronomy Brigham Young University August 2008 Copyright c 2008 Jonathan P. Daniels Jr. All Rights Reserved BRIGHAM YOUNG UNIVERSITY DEPARTMENT APPROVAL of a senior thesis submitted by Jonathan P. Daniels Jr. This thesis has been reviewed by the research advisor, research coordinator, and department chair and has been found to be satisfactory. Date J. Ward Moody, Advisor Date Eric Hintz, Research Coordinator Date Ross Spencer, Department Chair ABSTRACT LIGHT CURVES FOR SUPERNOVA SN2006JC Jonathan P. Daniels Jr. Department of Physics and Astronomy Senior Thesis On October ninth of 2006 a supernova was discovered in the galaxy UGC 4904. It was designated SN 2006jc. This SN is thought to be either a type Ib, a type Ic, or a type Ibc supernova. The progenitor star is thought to have been a Wolf-Rayet star that had a massive eruption two years before the supernova. Alternatively the progenitor may have been a Wolf-Rayet Star in a binary system with the LBV star that had the outburst. We observed this SN for 23 nights from October 26, 2006 to January 3, 2007 using the Tenagra II telescope. These observations were made in V, R, and I filters. We reduced the data and graphed the SN magnitude versus Julian date to make light curves for the three filters. The data obtained and analyzed in this thesis are part of the Swift SN Multi-wavelength Monitoring Project. -
A Giant Outburst Two Years Before the Core- Collapse of a Massive Star
1 A giant outburst two years before the core- collapse of a massive star A. Pastorello 1, S.J. Smartt 1, S. Mattila 1, J.J. Eldridge 1, D. Young 1, K. Itagaki 2, H. Yamaoka 3, H. Navasardyan 4, S. Valenti 5, 6, F. Patat 5, I. Agnoletto 4, 7, T. Augusteijn 8 , S. Benetti 4, E. Cappellaro 4, T. Boles 9, J.- M. Bonnet- Bidaud 10 , M.T. Botticella 11 , F. Bufano 4, 7, C. Cao 12 , J. Deng 12,13 , M. Dennefeld 14 , N. Elias- Rosa 4, 15 , A. Harutyunyan 4, 7, F.P. Keenan 1, T. Iijima 16 , V. Lorenzi 17 , P.A. Mazzali 18, 19 , X. Meng 12 , S. Nakano 20 , T.B. Nielsen 8, J.V. Smoker 1, V. Stanishev 21 , M. Turatto 4, D. Xu12 , L. Zampieri 4 1. Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, United Kingdom 2. Itagaki Astronomical Observatory, Teppo- cho, Yamagata, Japan 3. Department of Physics, Kyushu University, Fukuoka 810- 8560, Japan. 4. INAF Osservatorio Astronomico di Padova, Vicolo dell' Osservatorio 5, I- 35122 Padova, Italy 5. European Southern Observatory (ESO), Karl- Schwarzschild- Str. 2, D- 85748 Garching bei München, Germany 6. Dipartimento di Fisica, Universit à di Ferrara, via del Paradiso 12, I- 44100 Ferrara, Italy 7. Dipartimento di Astronomia, Universit à di Padova, Vicolo dell'Osservatorio 2, I- 35122 Padova, Italy 8. Nordic Optical Telescope, Apartado 474, E- 38700 Santa Cruz de la Palma, Tenerife, Spain 2 9. Coddenham Astronomical Observatory, Suffolk, England U.K 10. Service d'Astrophysique, DSM/DAPNIA/SAp, CE Saclay, F-91191 Gif- sur- Yvette Cedex, France 11. -
March 2019 BRAS Newsletter
Monthly Meeting March 11th at 7PM at HRPO (Monthly meetings are on 2nd Mondays, Highland Road Park Observatory). Speaker: Don Weinell "When is a Theory just a Theory?" What's In This Issue? President’s Message Secretary's Summary Outreach Report Astrophotography Group Asteroid and Comet News Light Pollution Committee Report Globe at Night Recent BRAS Forum Entries Messages from the HRPO Science Academy Friday Night Lecture Series Special Lecture : “Small Things Move Faster Nano Days International Astronomy Day” American Radio Relay League Field Day Observing Notes – Lynx – The Lynx & Mythology Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society Newsletter of the Baton Rouge Astronomical Society March 2019 © 2019 President’s Message At this month's meeting we will draw for the winner in our Telescope Raffle/fundraiser (see below). You have until the drawing to buy more tickets. After we draw for the telescope we will draw for consolation prizes. VOLUNTEER AT HRPO: If any of the members wish to volunteer at HRPO, please speak to Chris Kersey, BRAS Liaison for BREC, to fill out the paperwork.. MONTHLY SPEAKERS: One of the club’s needs is speakers for our monthly meetings if you are willing to give a talk or know of a great speaker let us know. UPCOMING BRAS MEETINGS: Light Pollution Committee - HRPO, Wednesday, March 6, 6:15 P.M. Business Meeting – HRPO, Wednesday, March 6, 7 P.M. Monthly Meeting – HRPO, Monday, March 11, 7 P.M. VOLUNTEERS: While BRAS members are not required to volunteer, if we do grow our volunteer core in 2019 we can do more fun activities without wearing out our great volunteers.