Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 714, Issue 2, Pages L280-L284Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/714/2/L280
Keywords
galaxies: individual (NGC 1832); stars: evolution; supernovae: general; supernovae: individual (SN 2009kr)
Categories
Funding
- NASA [NAS5-26555]
- Department of Employment and Learning NI
- Academy of Finland [8120503]
- Hungarian OTKA [K76816]
- Hungarian Eotvos Fellowship
- German Research Foundation (DFG) [TRR 33]
- STFC [ST/G000921/1, ST/G009465/1, PP/C506805/1, PP/D508212/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G009465/1, PP/C506805/1, ST/G000921/1, PP/D508212/1] Funding Source: researchfish
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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.
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