The Carbon-rich Type Ic SN 2007gr: The Photospheric Phase

2007/12/12 by S. Valenti, N. Elias-Rosa, S. Taubenberger +20 · 3 citations
Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #CCD and CMOS Imaging Sensors #Gamma-ray bursts and supernovae #astro-ph

paper · pdf · doi:10.1086/527672

published as Astrophys.J. 673 (2008) L155-L158 · Accepted for publication in the Astrophysical Journal Letters

arxiv created 2007/12/12 · openalex publication_date 2008/01/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The first 2 months of spectroscopic and photometric monitoring of the nearby Type Ic SN 2007gr are presented. The very early discovery (less than 5 days after the explosion) and the relatively short distance of the host galaxy motivated an extensive observational campaign. SN 2007gr shows an average peak luminosity but unusually narrow spectral lines and an almost flat photospheric velocity profile. The detection of prominent carbon features in the spectra is shown and suggests a wide range in carbon abundance in stripped-envelope supernovae. SN 2007gr may be an important piece in the puzzle of the observed diversity of CC SNe.

Citations

• A giant outburst two years before the core-collapse of a massive star
• The Birth Place of the Type Ic Supernova 2007gr
• Supernova classes and subclasses

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