Caltech Core-Collapse Project (CCCP) Observations of Type II Supernovae: Evidence for Three Distinct Photometric Subtypes
Iair Arcavi,Avishay Gal-Yam,S. Bradley Cenko,Derek B. Fox,Douglas C. Leonard,Dae-Sik Moon,David J. Sand,David J. Sand,Alicia M. Soderberg,Michael Kiewe,O. Yaron,Adam B. Becker,Raphael Scheps,Gali Birenbaum,Daniel Chamudot,Jonathan Zhou +15 more
TL;DR: In this paper, the authors present R-band light curves of Type II supernovae from the Caltech Core Collapse Project (CCCP) and find that most light curve shapes belong to one of three distinct classes: plateau, slowly declining and rapidly declining events.
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Abstract: We present R-Band light curves of Type II supernovae (SNe) from the Caltech Core Collapse Project (CCCP). With the exception of interacting (Type IIn) SNe and rare events with long rise times, we find that most light curve shapes belong to one of three distinct classes: plateau, slowly declining and rapidly declining events. The last class is composed solely of Type IIb SNe which present similar light curve shapes to those of SNe Ib, suggesting, perhaps, similar progenitor channels. We do not find any intermediate light curves, implying that these subclasses are unlikely to reflect variance of continuous parameters, but rather might result from physically distinct progenitor systems, strengthening the suggestion of a binary origin for at least some stripped SNe. We find a large plateau luminosity range for SNe IIP, while the plateau lengths seem rather uniform at approximately 100 days. As analysis of additional CCCP data goes on and larger samples are collected, demographic studies of core collapse SNe will likely continue to provide new constraints on progenitor scenarios.
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The Automated Palomar 60 Inch Telescope
S. Bradley Cenko,Derek B. Fox,Dae-Sik Moon,Fiona A. Harrison,Shrinivas R. Kulkarni,John Henning,C. Dani Guzman,Marco Bonati,Roger M. H. Smith,Robert P. Thicksten,Michael W. Doyle,Hal L. Petrie,Avishay Gal-Yam,Alicia M. Soderberg,Nathaniel L. Anagnostou,Anastasia C. Laity +15 more
TL;DR: The Palomar 60 inch (1.52 m) telescope as mentioned in this paper was converted from a classic night-assistant operated telescope to a fully robotic facility, which was designed for moderately fast (t ≾ 3 minutes) and sustained (R ≾ mag) observations of gamma-ray burst afterglows and other transient events.
SN 2005cs in M51 – II. Complete evolution in the optical and the near-infrared
Andrea Pastorello,Stefano Valenti,Luca Zampieri,H. Navasardyan,S. Taubenberger,S. J. Smartt,A. A. Arkharov,O. Bärnbantner,Heinz Barwig,S. Benetti,P. Birtwhistle,M. T. Botticella,Enrico Cappellaro,M. Del Principe,F. Di Mille,G. Di Rico,Mauro Dolci,Nancy Elias-Rosa,N. V. Efimova,M. Fiedler,Avet Harutyunyan,P. Höflich,W. Kloehr,Valeri M. Larionov,Valeri M. Larionov,V. Lorenzi,Justyn R. Maund,Justyn R. Maund,N. Napoleone,M. Ragni,Michael Richmond,C. Ries,S. Spiro,S. Spiro,S. Spiro,S. Temporin,Massimo Turatto,John C Wheeler +37 more
TL;DR: In this paper, the authors present the results of a one-year long observational campaign of the type II plateau SN 2005cs, which exploded in the nearby spiral galaxy M51 (the Whirlpool galaxy).
SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared
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