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Article: Candidates for extreme carbon stars

TitleCandidates for extreme carbon stars
Authors
KeywordsCircumstellar Matter
Infrared: Stars
Stars: Carbon
Issue Date1992
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637X
Citation
The Astrophysical Journal, 1992, v. 391 n. 1, p. 285-294 How to Cite?
AbstractA group of candidates for extreme carbon stars has been identified based on their IRAS low-resolution spectra being similar to those of AFGL 3068 and IRC +10°216, which are prototypes of highly evolved carbon stars with very high mass-loss rates. Ground-based photometry has been obtained for five of these sources in order to determine the peaks of their energy distributions. All five sources have color temperatures between 300 and 500 K, and have energy distributions very similar to AFGL 3068. The observed data are fitted with radiative transfer models with optical depths at 11.3 μm ranging from 1.4 to 8. These results suggest that these stars have among the most optically thick circumstellar envelopes of all carbon stars observed to date.
Persistent Identifierhttp://hdl.handle.net/10722/179635
ISSN
2015 Impact Factor: 5.909
2015 SCImago Journal Rankings: 3.266

 

DC FieldValueLanguage
dc.contributor.authorVolk, Ken_US
dc.contributor.authorKwok, Sen_US
dc.contributor.authorLangill, PPen_US
dc.date.accessioned2012-12-19T10:02:11Z-
dc.date.available2012-12-19T10:02:11Z-
dc.date.issued1992en_US
dc.identifier.citationThe Astrophysical Journal, 1992, v. 391 n. 1, p. 285-294en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/179635-
dc.description.abstractA group of candidates for extreme carbon stars has been identified based on their IRAS low-resolution spectra being similar to those of AFGL 3068 and IRC +10°216, which are prototypes of highly evolved carbon stars with very high mass-loss rates. Ground-based photometry has been obtained for five of these sources in order to determine the peaks of their energy distributions. All five sources have color temperatures between 300 and 500 K, and have energy distributions very similar to AFGL 3068. The observed data are fitted with radiative transfer models with optical depths at 11.3 μm ranging from 1.4 to 8. These results suggest that these stars have among the most optically thick circumstellar envelopes of all carbon stars observed to date.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637Xen_US
dc.relation.ispartofThe Astrophysical Journalen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectCircumstellar Matteren_US
dc.subjectInfrared: Starsen_US
dc.subjectStars: Carbonen_US
dc.titleCandidates for extreme carbon starsen_US
dc.typeArticleen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1086/171344-
dc.identifier.scopuseid_2-s2.0-0000757846en_US
dc.identifier.volume391en_US
dc.identifier.issue1en_US
dc.identifier.spage285en_US
dc.identifier.epage294en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridVolk, K=7006571965en_US
dc.identifier.scopusauthoridKwok, S=22980498300en_US
dc.identifier.scopusauthoridLangill, PP=6507845721en_US

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