The type IIb SN 2008ax: the nature of the progenitor

Rhonda Crockett, John Eldridge, Stephen Smartt, Andrea Pastorello, A. Gal-Yam, D.B. Fox, D.C. Leonard, M.M. Kasliwal, Seppo Mattila, Justyn Maund, A.W. Stephens, I.J. Danziger

Research output: Contribution to journalArticlepeer-review

87 Citations (Scopus)


A source coincident with the position of the type IIb supernova (SN) 2008ax is identified in pre-explosion Hubble Space Telescope (HST) Wide Field Planetary Camera 2 observations in three optical filters. We identify and constrain two possible progenitor systems: (i) a single massive star that lost most of its hydrogen envelope through radiatively driven mass-loss processes, prior to exploding as a helium-rich Wolf-Rayet star with a residual hydrogen envelope, and (ii) an interacting binary in a low-mass cluster producing a stripped progenitor. Late time, high-resolution observations along with detailed modelling of the SN will be required to reveal the true nature of this progenitor star.
Original languageEnglish
Pages (from-to)L5-L9
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Issue number1
Publication statusPublished - Nov 2008

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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