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Supernova 2012ec :
Supernova 2012ec : identification of the progenitor and early monitoring with PESSTO
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Maund, J. R. (author)
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Fraser, M. (author)
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Smartt, S. J. (author)
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Botticella, M. T. (author)
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Barbarino, C. (author)
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Childress, M. (author)
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Gal-Yam, A. (author)
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Inserra, C. (author)
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Pignata, G. (author)
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Reichart, D. (author)
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Schmidt, B. (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Taddia, Francesco (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Tomasella, L. (author)
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Valenti, S. (author)
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Yaron, O. (author)
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(creator_code:org_t)
- 2013-03-07
- 2013
- English.
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In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966 .- 1745-3933 .- 1745-3925. ; 431:1, s. l102-L106
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https://academic.oup...
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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
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- We present the identification of the progenitor of the Type IIP SN 2012ec in archival pre-explosion Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) and Advanced Camera for Surveys Wide Field Channel F814W images. The properties of the progenitor are further constrained by non-detections in pre-explosion WFPC2 F450W and F606W images. We report a series of early photometric and spectroscopic observations of SN 2012ec. The r' -band light curve shows a plateau with M-r' = -17.0. The early spectrum is similar to the Type IIP SN 1999em, with the expansion velocity measured at Ha absorption minimum of -11 700 km s(-1) (at 1 d post-discovery). The photometric and spectroscopic evolution of SN 2012ec shows it to be a Type IIP SN, discovered only a few days post-explosion (<6 d). We derive a luminosity for the progenitor, in comparison with MARCS model spectral energy distributions, of log L/L-circle dot = 5.15 +/- 0.19, from which we infer an initial mass range of 14-22M(circle dot). This is the first SN with an identified progenitor to be followed by the Public ESO Spectroscopic Survey of Transient Objects (PESSTO).
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- supernovae: general
- supernovae: individual: 2012ec
- galaxies: individual: NGC 1084
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Maund, J. R.
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Fraser, M.
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Smartt, S. J.
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Botticella, M. T ...
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Barbarino, C.
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Childress, M.
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show more...
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Gal-Yam, A.
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Inserra, C.
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Pignata, G.
-
Reichart, D.
-
Schmidt, B.
-
Sollerman, Jespe ...
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Taddia, Francesc ...
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Tomasella, L.
-
Valenti, S.
-
Yaron, O.
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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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Stockholm University