Early-time Spitzer observations of the type II plateau supernova SN 2004dj

Rubina Kotak, P. Meikle, S.D. Van Dyk, P.A. Hoflich, Seppo Mattila

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46 Citations (Scopus)


We present mid-infrared observations with the Spitzer Space Telescope of the nearby Type II-P supernova SN 2004dj at epochs of 89 - 129 days. We have obtained the first mid-IR spectra of any supernova apart from SN 1987A. A prominent [Ni II] 6.64 mu m line is observed, from which we deduce that the mass of stable nickel must be at least 2.2 x 10(-4) M-.. We also observe the red wing of the CO fundamental band. We relate our findings to possible progenitors and favor an evolved star, most likely a red supergiant, with a probable initial mass between similar to 10 and 15 M-..
Original languageEnglish
Pages (from-to)L123-L126
Number of pages4
JournalAstrophysical Journal
Issue number2 II
Publication statusPublished - 01 Aug 2005

ASJC Scopus subject areas

  • Space and Planetary Science

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