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THE UNUSUALLY LUMIN...
THE UNUSUALLY LUMINOUS EXTRAGALACTIC NOVA SN 2010U
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Czekala, Ian (author)
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Berger, E. (author)
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Chornock, R. (author)
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Pastorello, A. (author)
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Marion, G. H. (author)
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Margutti, R. (author)
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Botticella, M. T. (author)
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Challis, P. (author)
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- Ergon, Mattias (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Smartt, S. (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Vinko, J. (author)
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Wheeler, J. C. (author)
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(creator_code:org_t)
- 2013
- 2013
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 765:1, s. 57-
- 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
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- We present observations of the unusual optical transient SN 2010U, including spectra taken 1.03 days to 15.3 days after maximum light that identify it as a fast and luminous Fe II type nova. Our multi-band light curve traces the fast decline (t(2) = 3.5 +/- 0.3 days) from maximum light (M-V = -10.2 +/- 0.1 mag), placing SN 2010U in the top 0.5% of the most luminous novae ever observed. We find typical ejecta velocities of approximate to 1100 km s(-1) and that SN 2010U shares many spectral and photometric characteristics with two other fast and luminous Fe II type novae, including Nova LMC 1991 and M31N-2007-11d. For the extreme luminosity of this nova, the maximum magnitude versus rate of decline relationship indicates a massive white dwarf (WD) progenitor with a low pre-outburst accretion rate. However, this prediction is in conflict with emerging theories of nova populations, which predict that luminous novae from massive WDs should preferentially exhibit an alternate spectral type (He/N) near maximum light.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- novae
- cataclysmic variables
- supernovae: individual (SN 2010U)
- X-rays: stars
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Czekala, Ian
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Berger, E.
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Chornock, R.
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Pastorello, A.
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Marion, G. H.
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Margutti, R.
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show more...
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Botticella, M. T ...
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Challis, P.
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Ergon, Mattias
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Smartt, S.
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Sollerman, Jespe ...
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Vinko, J.
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Wheeler, J. C.
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show less...
- About the subject
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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 ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Stockholm University