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dc.contributor.author
González Gaitán, S.
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Tominaga, N.
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Molina, J.
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Galbany, L.
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Bufano, F.
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Anderson, J. P.
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Gutierrez, C.
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Förster, F.
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Pignata, G.
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Bersten, Melina Cecilia
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Howell, D. A.
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Sullivan, M.
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Carlberg, R.
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De Jaeger, T.
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Hamuy, M.
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Baklanov, P. V.
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Blinnikov, S. I.
dc.date.available
2017-03-13T19:08:26Z
dc.date.issued
2015-05
dc.identifier.citation
González Gaitán, S.; Tominaga, N.; Molina, J.; Galbany, L.; Bufano, F.; et al.; The rise-time of type II supernovae; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 451; 2; 5-2015; 2212-2229
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/13779
dc.description.abstract
We investigate the early-time light-curves of a large sample of 223 type II supernovae (SNe) from the Sloan Digital Sky Survey and the Supernova Legacy Survey. Having a cadence of a few days and sufficient non-detections prior to explosion, we constrain rise-times, i.e. the durations from estimated first to maximum light, as a function of effective wavelength. At restframe g-band (4722A), we find a distribution of fast rise-times with median of (7.5+/-0.3) days. Comparing these durations with analytical shock models of Rabinak and Waxman (2013); Nakar and Sari (2010) and hydrodynamical models of Tominaga et al. (2009), which are mostly sensitive to progenitor radius at these epochs, we find a median characteristic radius of less than 400 solar radii. The inferred radii are on average much smaller than the radii obtained for observed red supergiants (RSG). Investigating the post-maximum slopes as a function of effective wavelength in the light of theoretical models, we find that massive hydrogen envelopes are still needed to explain the plateaus of SNe II. We therefore argue that the SN II rise-times we observe are either a) the shock cooling resulting from the core collapse of RSG with small and dense envelopes, or b) the delayed and prolonged shock breakout of the collapse of a RSG with an extended atmosphere or embedded within pre-SN circumstellar material.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Supernovae
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Red Supergiants
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
The rise-time of type II supernovae
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-03-07T15:21:31Z
dc.journal.volume
451
dc.journal.number
2
dc.journal.pagination
2212-2229
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: González Gaitán, S.. Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Tominaga, N.. Konan University; Japón
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Fil: Molina, J.. Universidad de Chile; Chile
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Fil: Galbany, L.. Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Bufano, F.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Anderson, J. P. . European Southern Observatory; Chile
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Fil: Gutierrez, C.. Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Förster, F.. Millennium Institute of Astrophysics; Chile. Universidad de Chile; Chile
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Fil: Pignata, G.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo; Japón
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Fil: Howell, D. A. . Las Cumbres Observatory Global Telescope Network; Estados Unidos. University of California; Estados Unidos
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Fil: Sullivan, M.. University of Southampton; Reino Unido
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Fil: Carlberg, R.. University Of Toronto; Canadá
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Fil: De Jaeger, T. . Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Hamuy, M.. Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Baklanov, P. V. . Novosibirsk State University; Rusia
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Fil: Blinnikov, S. I. . University of Tokyo; Japón
dc.journal.title
Monthly Notices Of The Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/451/2/2212/1749558/The-rise-time-of-Type-II-supernovae?redirectedFrom=fulltext
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/arxiv/https://doi.org/10.1093/mnras/stv1097
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