Varied Deaths of Massive Stars: Optical and NIR Properties of Type Ib/c Supernovae

Details Varied Deaths of Massive Stars: Optical and NIR Properties of Type Ib/c Supernovae Varied Deaths of Massive Stars: Optical and NIR Properties of Type Ib/c Supernovae

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20920004m&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #200.04; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Supernovae of Type Ib/c are core-collapse supernovae whose massive progenitors have been stripped of their hydrogen and helium envelopes. While the Type Ic Supernovae (SN Ic) associated with long Gamma Ray Bursts (GRBs) have been studied, we do not know the full range of properties of normal or broad-lined SN Ic with which they should be compared. Nor do we fully understand the conditions that lead to each kind of explosion in a star with extensive mass loss. I will present a densely covered and homogeneous sample of optical and NIR data of SN Ib/c that doubles the world supply of well-observed events. The data begin as early as two weeks before maximum light and go to late times, when the supernovae enter the nebular phase. I discuss general properties of this population of stripped-envelope core-collapse supernovae, including their luminosity distribution, and photometric and spectroscopic relationships. Specifically, I will present data of SN 2005bf, a unique Type Ib SN, and of SN 2006aj, the most recent spectroscopically-confirmed SN associated with GRB060218. I will emphasize signs of asphericity seen even in normal SN Ib/c, their NIR properties and their host galaxy characteristics. In conjunction with the most recent literature, I will discuss their implications for the SN-GRB connection.
The CfA Supernova program is supported in part by the National Science Foundation through grant AST-0606772 to Harvard University.

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