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The lowest-metallic...
The lowest-metallicity type II supernova from the highest-mass red supergiant progenitor
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Anderson, P. (author)
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Dessart, L. (author)
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Gutiérrez, C. P. (author)
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Krühler, T. (author)
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Galbany, L. (author)
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Jerkstrand, A. (author)
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Smartt, S. J. (author)
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Contreras, C. (author)
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Morrell, N. (author)
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Phillips, M. M. (author)
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Stritzinger, M. D. (author)
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Hsiao, E. Y. (author)
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González-Gaitán, S. (author)
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Agliozzo, C. (author)
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Castellón, S. (author)
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Chambers, K. C. (author)
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Chen, T. -W. (author)
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Flewelling, H. (author)
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Gonzalez, C. (author)
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Hosseinzadeh, G. (author)
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Huber, M. (author)
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Fraser, M. (author)
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Inserra, C. (author)
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Kankare, E. (author)
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Mattila, S. (author)
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Magnier, E. (author)
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Maguire, K. (author)
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Lowe, T. B. (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Sullivan, M. (author)
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Young, D. R. (author)
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Valenti, S. (author)
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(creator_code:org_t)
- 2018-05-07
- 2018
- English.
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In: Nature Astronomy. - : Springer Science and Business Media LLC. - 2397-3366. ; 2:7, s. 574-579
- Related links:
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https://pureadmin.qu...
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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
- Red supergiants have been confirmed as the progenitor stars of the majority of hydrogen-rich type II supernovae(1). However, while such stars are observed with masses > 25 M-circle dot (ref. (2)), detections of > 18 M-circle dot progenitors remain elusive(1). Red supergiants are also expected to form at all metallicities, but discoveries of explosions from low-metallicity progenitors are scarce. Here, we report observations of the type II supernova, SN 2015bs, for which we infer a progenitor metallicity of <= 0.1 Z(circle dot) from comparison to photospheric-phase spectral models(3), and a zero-age main-sequence mass of 17-25 M-circle dot through comparison to nebular-phase spectral models(4,5). SN 2015bs displays a normal 'plateau' light-curve morphology, and typical spectral properties, implying a red supergiant progenitor. This is the first example of such a high-mass progenitor for a 'normal' type II supernova, suggesting a link between high-mass red supergiant explosions and low-metallicity progenitors.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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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Anderson, P.
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Dessart, L.
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Gutiérrez, C. P.
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Krühler, T.
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Galbany, L.
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Jerkstrand, A.
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show more...
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Smartt, S. J.
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Contreras, C.
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Morrell, N.
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Phillips, M. M.
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Stritzinger, M. ...
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Hsiao, E. Y.
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González-Gaitán, ...
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Agliozzo, C.
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Castellón, S.
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Chambers, K. C.
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Chen, T. -W.
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Flewelling, H.
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Gonzalez, C.
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Hosseinzadeh, G.
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Huber, M.
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Fraser, M.
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Inserra, C.
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Kankare, E.
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Mattila, S.
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Magnier, E.
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Maguire, K.
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Lowe, T. B.
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Sollerman, Jespe ...
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Sullivan, M.
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Young, D. R.
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Valenti, S.
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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 ...
- Articles in the publication
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Nature Astronomy
- By the university
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Stockholm University