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)


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
Issue number2 PART 2
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