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Article: Detailed spectroscopic analysis of SN 1987A: The distance to the large magellanic cloud using the spectral-fitting expanding atmosphere method

TitleDetailed spectroscopic analysis of SN 1987A: The distance to the large magellanic cloud using the spectral-fitting expanding atmosphere method
Authors
KeywordsDistance scale
Line: formation
Nuclear reactions, nucleosynthesis, abundances
Radiative transfer
Supernovae: individual (SN 1987A)
Issue Date2002
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2002, v. 574 n. 1 I, p. 293-305 How to Cite?
AbstractSupernova 1987A remains the most well studied supernova to date. Observations produced excellent broadband photometric and spectroscopic coverage over a wide wavelength range at all epochs. We model the observed spectra from day 1 to day 81 using a hydrodynamical model. We show that good agreement can be obtained at times up to about 60 days if we allow for extended nickel mixing. Later than about 60 days the observed Balmer lines become stronger than our models can reproduce. We show that this is likely due to a more complicated distribution of gamma rays than we allow for in our spherically symmetric calculations. We present synthetic light curves in UBVRIJHK and a synthetic bolometric light curve. Using this broad baseline of detailed spectroscopic models, we find a distance modulus of μ = 18.5 ± 0.2 using the spectral-fitting expanding atmosphere method of determining distances to supernovae. We find that the explosion time agrees with that of the neutrino burst and is constrained at 68% confidence to within ±0.9 days. We argue that the weak Balmer lines of our detailed model calculations cast doubt on the accuracy of the purely photometric expanding photosphere method. We also suggest that Type IIP supernovae will be most useful as distance indicators at early times because of a variety of effects.
Persistent Identifierhttp://hdl.handle.net/10722/43390
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMitchell, RCen_HK
dc.contributor.authorBaron, Een_HK
dc.contributor.authorBranch, Den_HK
dc.contributor.authorHauschildt, PHen_HK
dc.contributor.authorNugent, PEen_HK
dc.contributor.authorLundqvist, Pen_HK
dc.contributor.authorBlinnikov, Sen_HK
dc.contributor.authorPun, CSJen_HK
dc.date.accessioned2007-03-23T04:44:48Z-
dc.date.available2007-03-23T04:44:48Z-
dc.date.issued2002en_HK
dc.identifier.citationAstrophysical Journal Letters, 2002, v. 574 n. 1 I, p. 293-305en_HK
dc.identifier.issn2041-8205en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43390-
dc.description.abstractSupernova 1987A remains the most well studied supernova to date. Observations produced excellent broadband photometric and spectroscopic coverage over a wide wavelength range at all epochs. We model the observed spectra from day 1 to day 81 using a hydrodynamical model. We show that good agreement can be obtained at times up to about 60 days if we allow for extended nickel mixing. Later than about 60 days the observed Balmer lines become stronger than our models can reproduce. We show that this is likely due to a more complicated distribution of gamma rays than we allow for in our spherically symmetric calculations. We present synthetic light curves in UBVRIJHK and a synthetic bolometric light curve. Using this broad baseline of detailed spectroscopic models, we find a distance modulus of μ = 18.5 ± 0.2 using the spectral-fitting expanding atmosphere method of determining distances to supernovae. We find that the explosion time agrees with that of the neutrino burst and is constrained at 68% confidence to within ±0.9 days. We argue that the weak Balmer lines of our detailed model calculations cast doubt on the accuracy of the purely photometric expanding photosphere method. We also suggest that Type IIP supernovae will be most useful as distance indicators at early times because of a variety of effects.en_HK
dc.format.extent1163163 bytes-
dc.format.extent26624 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_HK
dc.relation.ispartofAstrophysical Journal Lettersen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe Astrophysical Journal. Copyright © University of Chicago Press.en_HK
dc.subjectDistance scaleen_HK
dc.subjectLine: formationen_HK
dc.subjectNuclear reactions, nucleosynthesis, abundancesen_HK
dc.subjectRadiative transferen_HK
dc.subjectSupernovae: individual (SN 1987A)en_HK
dc.titleDetailed spectroscopic analysis of SN 1987A: The distance to the large magellanic cloud using the spectral-fitting expanding atmosphere methoden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=574&issue=1 pt 1&spage=293&epage=305&date=2002&atitle=Detailed+Spectroscopic+Analysis+of+SN+1987A:+The+Distance+to+the+Large+Magellanic+Cloud+Using+the+Spectral-fitting+Expanding+Atmosphere+Methoden_HK
dc.identifier.emailPun, CSJ: jcspun@hkucc.hku.hken_HK
dc.identifier.authorityPun, CSJ=rp00772en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1086/340928en_HK
dc.identifier.scopuseid_2-s2.0-0042732209en_HK
dc.identifier.hkuros77196-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0042732209&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume574en_HK
dc.identifier.issue1 Ien_HK
dc.identifier.spage293en_HK
dc.identifier.epage305en_HK
dc.identifier.isiWOS:000176978200024-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridMitchell, RC=7403973708en_HK
dc.identifier.scopusauthoridBaron, E=7102558228en_HK
dc.identifier.scopusauthoridBranch, D=7103272488en_HK
dc.identifier.scopusauthoridHauschildt, PH=7006014053en_HK
dc.identifier.scopusauthoridNugent, PE=7004614529en_HK
dc.identifier.scopusauthoridLundqvist, P=7004499555en_HK
dc.identifier.scopusauthoridBlinnikov, S=7003669392en_HK
dc.identifier.scopusauthoridPun, CSJ=7003931846en_HK

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