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Article: 56Ni mixing in the outer layers of SN 1987A

Title56Ni mixing in the outer layers of SN 1987A
Authors
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
Citation
Astrophysical Journal Letters, 2001, v. 556 n. 2 PART 1, p. 979-986 How to Cite?
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.
Persistent Identifierhttp://hdl.handle.net/10722/174807
ISSN
2014 Impact Factor: 5.339
2014 SCImago Journal Rankings: 2.992
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMitchell, RCen_US
dc.contributor.authorBaron, Een_US
dc.contributor.authorBranch, Den_US
dc.contributor.authorLundqvist, Pen_US
dc.contributor.authorBlinnikov, Sen_US
dc.contributor.authorHauschildt, PHen_US
dc.contributor.authorPun, CSJen_US
dc.date.accessioned2012-11-26T08:47:33Z-
dc.date.available2012-11-26T08:47:33Z-
dc.date.issued2001en_US
dc.identifier.citationAstrophysical Journal Letters, 2001, v. 556 n. 2 PART 1, p. 979-986en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/174807-
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.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.subjectLine: Formationen_US
dc.subjectNuclear Reactions, Nucleosynthesis, Abundancesen_US
dc.subjectRadiative Transferen_US
dc.subjectSupernovae: Individual (Sn 1987A)en_US
dc.title56Ni mixing in the outer layers of SN 1987Aen_US
dc.typeArticleen_US
dc.identifier.emailPun, CSJ: jcspun@hkucc.hku.hken_US
dc.identifier.authorityPun, CSJ=rp00772en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1086/321623en_US
dc.identifier.scopuseid_2-s2.0-0035429717en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035429717&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume556en_US
dc.identifier.issue2 PART 1en_US
dc.identifier.spage979en_US
dc.identifier.epage986en_US
dc.identifier.isiWOS:000170425300038-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridMitchell, RC=7403973708en_US
dc.identifier.scopusauthoridBaron, E=7102558228en_US
dc.identifier.scopusauthoridBranch, D=7103272488en_US
dc.identifier.scopusauthoridLundqvist, P=7004499555en_US
dc.identifier.scopusauthoridBlinnikov, S=7003669392en_US
dc.identifier.scopusauthoridHauschildt, PH=7006014053en_US
dc.identifier.scopusauthoridPun, CSJ=7003931846en_US

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