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RED AND DEAD :
RED AND DEAD : THE PROGENITOR OF SN 2012aw IN M95
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Fraser, M. (author)
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Maund, J. R. (author)
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Smartt, S. J. (author)
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Botticella, M-T (author)
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Dall'Ora, M. (author)
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Inserra, C. (author)
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Tomasella, L. (author)
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Benetti, S. (author)
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Ciroi, S. (author)
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Eldridge, J. J. (author)
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- Ergon, Mattias (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Kotak, R. (author)
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Mattila, S. (author)
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Ochner, P. (author)
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Pastorello, A. (author)
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Reilly, E. (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Stephens, A. (author)
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- Taddia, Francesco (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Valenti, S. (author)
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: The Astrophysical Journal Letters. - 2041-8205. ; 759:1, s. L13-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- Core-collapse supernovae (SNe) are the spectacular finale to massive stellar evolution. In this Letter, we identify a progenitor for the nearby core-collapse SN 2012aw in both ground-based near-infrared and space-based optical pre-explosion imaging. The SN itself appears to be a normal Type II Plateau event, reaching a bolometric luminosity of 10(42) erg s(-1) and photospheric velocities of similar to 11,000 km s(-1) from the position of the H beta P-Cygni minimum in the early SN spectra. We use an adaptive optics image to show that the SN is coincident to within 27 mas with a faint, red source in pre-explosion HST+WFPC2, VLT+ISAAC, and NTT+SOFI images. The source has magnitudes F555W = 26.70 +/- 0.06, F814W = 23.39 +/- 0.02, J = 21.1 +/- 0.2, K = 19.1 +/- 0.4, which, when compared to a grid of stellar models, best matches a red supergiant. Interestingly, the spectral energy distribution of the progenitor also implies an extinction of A(V) > 1.2 mag, whereas the SN itself does not appear to be significantly extinguished. We interpret this as evidence for the destruction of dust in the SN explosion. The progenitor candidate has a luminosity between 5.0 and 5.6 log L/L-circle dot, corresponding to a zero-age main-sequence mass between 14 and 26 M-circle dot (depending on A(V)), which would make this one of the most massive progenitors found for a core-collapse SN to date.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: individual (M95)
- supergiants
- supernovae: general
- supernovae: individual (SN2012aw)
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Fraser, M.
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Maund, J. R.
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Smartt, S. J.
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Botticella, M-T
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Dall'Ora, M.
-
Inserra, C.
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show more...
-
Tomasella, L.
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Benetti, S.
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Ciroi, S.
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Eldridge, J. J.
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Ergon, Mattias
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Kotak, R.
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Mattila, S.
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Ochner, P.
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Pastorello, A.
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Reilly, E.
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Sollerman, Jespe ...
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Stephens, A.
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Taddia, Francesc ...
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Valenti, S.
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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The Astrophysica ...
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Stockholm University