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Article: 56Ni mixing in the outer layers of SN 1987A
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Title56Ni mixing in the outer layers of SN 1987A
 
AuthorsMitchell, RC3
Baron, E3
Branch, D3
Lundqvist, P1
Blinnikov, S5
Hauschildt, PH2
Pun, CSJ4
 
KeywordsLine: Formation
Nuclear Reactions, Nucleosynthesis, Abundances
Radiative Transfer
Supernovae: Individual (Sn 1987A)
 
Issue Date2001
 
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
 
CitationAstrophysical Journal Letters, 2001, v. 556 n. 2 PART 1, p. 979-986 [How to Cite?]
DOI: http://dx.doi.org/10.1086/321623
 
AbstractSupernova 1987A remains the most well observed and well studied supernova to date. Observations have produced excellent broadband photometric and spectroscopic coverage over a wide wavelength range at all epochs. Here we focus on the very early spectroscopic observations. Only recently have numerical models been of sufficient detail to accurately explain the observed spectra. In SN 1987A, good agreement has been found between observed and synthetic spectra for day 1, but by day 4, the predicted Balmer lines become much weaker than the observed lines. We present the results of work based on a radiation-hydrodynamic model by Blinnikov and collaborators. Synthetic non-LTE spectra generated from this model by the general radiation transfer code PHOENIX strongly support the theory that significant mixing of 56Ni into the outer envelope is required to maintain strong Balmer lines. Preliminary results suggest a lower limit to the average nickel mass of 1.0 x 10 -5 M ⊙ is required above 5000 km s -1 by day 4. PHOENIX models thus have the potential to be a sensitive probe for nickel mixing in the outer layers of a supernova.
 
ISSN2041-8205
2012 Impact Factor: 6.345
 
DOIhttp://dx.doi.org/10.1086/321623
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorMitchell, RC
 
dc.contributor.authorBaron, E
 
dc.contributor.authorBranch, D
 
dc.contributor.authorLundqvist, P
 
dc.contributor.authorBlinnikov, S
 
dc.contributor.authorHauschildt, PH
 
dc.contributor.authorPun, CSJ
 
dc.date.accessioned2012-11-26T08:47:33Z
 
dc.date.available2012-11-26T08:47:33Z
 
dc.date.issued2001
 
dc.description.abstractSupernova 1987A remains the most well observed and well studied supernova to date. Observations have produced excellent broadband photometric and spectroscopic coverage over a wide wavelength range at all epochs. Here we focus on the very early spectroscopic observations. Only recently have numerical models been of sufficient detail to accurately explain the observed spectra. In SN 1987A, good agreement has been found between observed and synthetic spectra for day 1, but by day 4, the predicted Balmer lines become much weaker than the observed lines. We present the results of work based on a radiation-hydrodynamic model by Blinnikov and collaborators. Synthetic non-LTE spectra generated from this model by the general radiation transfer code PHOENIX strongly support the theory that significant mixing of 56Ni into the outer envelope is required to maintain strong Balmer lines. Preliminary results suggest a lower limit to the average nickel mass of 1.0 x 10 -5 M ⊙ is required above 5000 km s -1 by day 4. PHOENIX models thus have the potential to be a sensitive probe for nickel mixing in the outer layers of a supernova.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationAstrophysical Journal Letters, 2001, v. 556 n. 2 PART 1, p. 979-986 [How to Cite?]
DOI: http://dx.doi.org/10.1086/321623
 
dc.identifier.doihttp://dx.doi.org/10.1086/321623
 
dc.identifier.epage986
 
dc.identifier.issn2041-8205
2012 Impact Factor: 6.345
 
dc.identifier.issue2 PART 1
 
dc.identifier.scopuseid_2-s2.0-0035429717
 
dc.identifier.spage979
 
dc.identifier.urihttp://hdl.handle.net/10722/174807
 
dc.identifier.volume556
 
dc.languageeng
 
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofAstrophysical Journal Letters
 
dc.relation.referencesReferences in Scopus
 
dc.subjectLine: Formation
 
dc.subjectNuclear Reactions, Nucleosynthesis, Abundances
 
dc.subjectRadiative Transfer
 
dc.subjectSupernovae: Individual (Sn 1987A)
 
dc.title56Ni mixing in the outer layers of SN 1987A
 
dc.typeArticle
 
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<contributor.author>Blinnikov, S</contributor.author>
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Author Affiliations
  1. Stockholm Observatory
  2. The University of Georgia
  3. University of Oklahoma
  4. NASA Goddard Space Flight Center
  5. Alikhanov Institute for Theoretical and Experimental Physics