ON THE PROGENITOR AND EARLY EVOLUTION OF THE TYPE II SUPERNOVA 2009kr

Morgan Fraser, K. Takats, Andrea Pastorello, Stephen Smartt, Seppo Mattila, Maria Botticella, Stefano Valenti, M. Ergon, J. Sollerman, I. Arcavi, S. Benetti, F. Bufano, Rhonda Crockett, I.J. Danziger, A. Gal-Yam, Justyn Maund, S. Taubenberger, M. Turatto

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

We identify a source coincident with SN 2009kr in Hubble Space Telescope pre-explosion images. The object appears to be a single point source with an intrinsic color V - I = 1.1 +/- 0.25 and M-V = -7.6 +/- 0.6. If this is a single star, it would be a yellow supergiant of log L/L-circle dot similar to 5.1 and a mass of 15(-4)(+5) M-circle dot. The spatial resolution does not allow us yet to definitively determine if the progenitor object is a single star, a binary system, or a compact cluster. We show that the early light curve is similar to a Type IIL SN, but the prominent H alpha P-Cygni profiles and the signature of the end of a recombination phase are reminiscent of a Type IIP. The evolution of the expanding ejecta will play an important role in understanding the progenitor object.
Original languageEnglish
Pages (from-to)L280-L284
Number of pages5
JournalAstrophysical Journal Letters
Volume714
Issue number2 PART 2
DOIs
Publication statusPublished - May 2010

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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    Fraser, M., Takats, K., Pastorello, A., Smartt, S., Mattila, S., Botticella, M., Valenti, S., Ergon, M., Sollerman, J., Arcavi, I., Benetti, S., Bufano, F., Crockett, R., Danziger, I. J., Gal-Yam, A., Maund, J., Taubenberger, S., & Turatto, M. (2010). ON THE PROGENITOR AND EARLY EVOLUTION OF THE TYPE II SUPERNOVA 2009kr. Astrophysical Journal Letters, 714(2 PART 2), L280-L284. https://doi.org/10.1088/2041-8205/714/2/L280