A1 Refereed original research article in a scientific journal
The type IIb SN 2008ax: the nature of the progenitor
Authors: Crockett RM, Eldridge JJ, Smartt SJ, Pastorello A, Gal-Yam A, Fox DB, Leonard DC, Kasliwal MM, Mattila S, Maund JR, Stephens AW, Danziger IJ
Publisher: WILEY-BLACKWELL PUBLISHING, INC
Publication year: 2008
Journal:Monthly Notices of the Royal Astronomical Society
Journal name in sourceMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Journal acronym: MON NOT R ASTRON SOC
Volume: 391
Issue: 1
First page : L5
Last page: L9
Number of pages: 5
ISSN: 0035-8711
DOI: https://doi.org/10.1111/j.1745-3933.2008.00540.x
Abstract
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.
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.
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