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18 April 2024

» arxiv » 1110.5618

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Evidence for a compact Wolf-Rayet progenitor for the Type Ic supernova PTF 10vgv
A. Corsi ; E. O. Ofek ; A. Gal-Yam ; D. A. Frail ; D. Poznanski ; P. A. Mazzali ; S. R. Kulkarni ; M. M. Kasliwal ; I. Arcavi ; S. Ben-Ami ; S. B. Cenko ; A. V. Filippenko ; D. B. Fox ; A. Horesh ; J. L. Howell ; I. K. W. Kleiser ; E. Nakar ; I. Rabinak ; R. Sari ; J. M. Silverman ; D. Xu ; J. S. Bloom ; N. M. Law ; P. Nugent ; R. M. Quimby ;
Date:	25 Oct 2011
Abstract:	We present the discovery of PTF 10vgv, a Type Ic supernova detected by the Palomar Transient Factory, using the Palomar 48-inch telescope (P48). R-band observations of the PTF 10vgv field with P48 probe the supernova 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 lesssim 4.5 Rsun (R lesssim 1 Rsun) 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 SN 1994I, yields R lesssim 1/4 Rsun for the progenitor radius of this supernova.
Source:	arXiv, 1110.5618
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