Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 688, Issue 2, Pages L91-L94Publisher
IOP PUBLISHING LTD
DOI: 10.1086/595587
Keywords
stars: evolution; supernovae: general; supernovae: individual (SN 2008bk)
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Funding
- EURYI scheme
- Academy of Finland [8120503]
- STFC [PP/D508212/1, ST/G000921/1, PP/C506805/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/D508212/1, ST/G000921/1, PP/C506805/1] Funding Source: researchfish
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We report the identification of a source coincident with the position of the nearby Type II-P supernova (SN) 2008bk in high-quality optical and near-infrared preexplosion images from the ESO Very Large Telescope (VLT). The SN position in the optical and near-infrared preexplosion images is identified to within about +/- 70 and +/- 40 mas, respectively, using postexplosion-band images obtained with the NAOS CONICA adaptive optics system K-s on the VLT. The preexplosion source detected in four different bands is precisely coincident with SN 2008bk and is consistent with being dominated by a single point source. We determine the nature of the point source using the STARS stellar evolutionary models and find that its colors and luminosity are consistent with the source being a red supergiant progenitor of SN 2008bk with an initial mass of 8.5 +/- 1.0 M-circle dot.
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