The Flavours of SN II Light Curves

Abstract

We present R-Band light curves of Type II supernovae (SNe) from the Caltech Core Collapse Program (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 latter 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. We present also host galaxy trends from the Palomar Transient Factory (PTF) core collapse SN sample, which augment some of the photometric results.

Published in the Proceedings of IAU Symposium No. 279, 2012 (Death of Massive Stars: Supernovae and Gamma-Ray Bursts). Based on Arcavi et al. 2012, ApJL 756, 30A

References in corpus (9)

• The First Systematic Study of Type Ibc Supernova Multi-band Light Curves
• Caltech Core-Collapse Project (CCCP) observations of type IIn supernovae: typical properties and implications for their progenitor stars
• SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared
• PTF11eon/SN2011dh: Discovery of a Type IIb Supernova From a Compact Progenitor in the Nearby Galaxy M51
• The Progenitor of Supernova 2011dh/PTF11eon in Messier 51
• The type IIb SN 2008ax: the nature of the progenitor
• Peculiar Type II Supernovae from Blue Supergiants
• Supernovae in Low-Redshift Galaxy Clusters: Observations by the Wise Observatory Optical Transient Search (WOOTS)
• GALEX Spectroscopy of SN 2005ay suggests a UV spectral uniformity among type II-P supernovae

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