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SN 2009N : linking normal and subluminous Type II-P SNe
- Takats, K. (author)
- Pumo, M. L. (author)
- Elias-Rosa, N. (author)
- show more...
- Pastorello, A. (author)
- Pignata, G. (author)
- Paillas, E. (author)
- Zampieri, L. (author)
- Anderson, J. P. (author)
- Vinko, J. (author)
- Benetti, S. (author)
- Botticella, M-T (author)
- Bufano, F. (author)
- Campillay, A. (author)
- Cartier, R. (author)
- Folatelli, G. (author)
- Foley, R. J. (author)
- Foerster, F. (author)
- Hamuy, M. (author)
- Hentunen, V-P (author)
- Kankare, E. (author)
- Morrell, N. (author)
- Nissinen, M. (author)
- Phillips, M. M. (author)
- Smartt, S. J. (author)
- Stritzinger, M. (author)
- Taubenberger, S. (author)
- Valenti, S. (author)
- Van Dyk, S. D. (author)
- Haislip, J. B. (author)
- LaCluyze, A. P. (author)
- Moore, J. P. (author)
- Reichart, D. (author)
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- (creator_code:org_t)
- 2013-12-13
- 2014
- English.
- In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 438:1, s. 368-387
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- We present ultraviolet, optical, near-infrared photometry and spectroscopy of SN 2009N in NGC 4487. This object is a Type II-P supernova with spectra resembling those of subluminous II-P supernovae, while its bolometric luminosity is similar to that of the intermediate-luminosity SN 2008in. We created SYNOW models of the plateau phase spectra for line identification and to measure the expansion velocity. In the near-infrared spectra we find signs indicating possible weak interaction between the supernova ejecta and the pre-existing circumstellar material. These signs are also present in the previously unpublished near-infrared spectra of SN 2008in. The distance to SN 2009N is determined via the expanding photosphere method and the standard candle method as D = 21.6 +/- 1.1 Mpc. The produced nickel-mass is estimated to be similar to 0.020 +/- 0.004 M-circle dot. We infer the physical properties of the progenitor at the explosion through hydrodynamical modelling of the observables. We find the values ofthe total energy as similar to 0.48 x 10(51) erg, the ejected mass as similar to 11.5 M-circle dot, and the initial radius as similar to 287 R-circle dot.
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: SN 2008in
- supernovae: individual: SN 2009N
- galaxies: individual: NGC 4487
- Astronomy
- astronomi
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
- Takats, K.
- Pumo, M. L.
- Elias-Rosa, N.
- Pastorello, A.
- Pignata, G.
- Paillas, E.
- show more...
- Zampieri, L.
- Anderson, J. P.
- Vinko, J.
- Benetti, S.
- Botticella, M-T
- Bufano, F.
- Campillay, A.
- Cartier, R.
- Ergon, Mattias
- Folatelli, G.
- Foley, R. J.
- Foerster, F.
- Hamuy, M.
- Hentunen, V-P
- Kankare, E.
- Leloudas, Georgi ...
- Morrell, N.
- Nissinen, M.
- Phillips, M. M.
- Smartt, S. J.
- Stritzinger, M.
- Taubenberger, S.
- Valenti, S.
- Van Dyk, S. D.
- Haislip, J. B.
- LaCluyze, A. P.
- Moore, J. P.
- Reichart, D.
- show less...
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- NATURAL SCIENCES
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- Stockholm University
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