Evidence for a compact wolf-rayet progenitor for the type Ic supernova PTF10vgv

A. Corsi, E. O. Ofek, Avishay Gal-Yam, D. A. Frail, D. Poznanski, P. A. Mazzali, S. R. Kulkarni, M. M. Kasliwal, Iair Arcavi, Sagi Ben-Ami, S. B. Cenko, A. V. Filippenko, D. B. Fox, Assaf Horesh, J. L. Howell, I. K. W. Kleiser, E. Nakar, Itay Rabinak, R. Sari

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33 Citations (Scopus)

Abstract

We present the discovery of PTF10vgv, a Type Ic supernova (SN) detected by the Palomar Transient Factory, using the Palomar 48 inch telescope (P48). R-band observations of the PTF10vgv field with P48 probe the SN emission from its very early phases (about two weeks before R-band maximum) and set limits on its flux in the week prior to the discovery. Our sensitive upper limits and early detections constrain the post-shock-breakout luminosity of this event. Via comparison to numerical (analytical) models, we derive an upper-limit of R ≲ 4.5 R (R ≲ 1 R ) on the radius of the progenitor star, a direct indication in favor of a compact Wolf-Rayet star. Applying a similar analysis to the historical observations of SN1994I yields R ≲ 1/4 R for the progenitor radius of this SN.

Original languageEnglish
Article numberL5
JournalAstrophysical Journal Letters
Volume747
Issue number1
DOIs
Publication statusPublished - 1 Mar 2012

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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