Diverse deaths of massive stars: Properties of SN Ib/c

Maryam Modjaz

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Supernovae of Type IIb, Ib and Ic are core-collapse supernovae whose massive progenitors have been stripped of progressively larger amounts of their hydrogen and helium envelopes. We present a selection of very well time-sampled, high-quality and homogeneous optical and near infrared (JHKS) light curves and optical spectra for a total of 20 nearby (z>0.03) SN of Types Ib and Ic, taken with the FLWO, Magellan and Gemini Telescopes. The data begin as early as two weeks before maximum light and go to late times (up to 300 days), when the supernovae are in the nebular phase. This sample doubles the world supply of well-observed stripped-envelope SN events. We discuss general properties of this population of core-collapse supernovae, including their photometric behavior. Specifically, we present data of SN 2006aj, the most recent spectroscopically-confirmed SN associated with GRB 060218, and of SN 2006jc, a supernova that shows signs of interaction with a dense He shell and dust. We see signs of aspherical explosions from nebular line profiles even in normal SN IIb, Ib and Ic. Our near infrared observations show that this band can carry a significant fraction of the bolometric flux, and is important to understand the physics of these supernovae.

    Original languageEnglish (US)
    Title of host publicationSUPERNOVA 1987A
    Subtitle of host publication20 YEARS AFTER: Supernovae and Gamma-Ray Bursters
    Pages404-411
    Number of pages8
    DOIs
    StatePublished - 2007
    EventSUPERNOVA 1987A: 20 YEARS AFTER: Supernovae and Gamma-Ray Bursters - Aspen, CO, United States
    Duration: Feb 19 2007Feb 23 2007

    Publication series

    NameAIP Conference Proceedings
    Volume937
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Other

    OtherSUPERNOVA 1987A: 20 YEARS AFTER: Supernovae and Gamma-Ray Bursters
    CountryUnited States
    CityAspen, CO
    Period2/19/072/23/07

    Keywords

    • Gammarays: bursts supernovae: general
    • Supemovae: individual (SN 2005bf SN 2006aj, SN 2006jc)

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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