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The evolutionary status of HD 179821

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dc.contributor.author Thévenin, F
dc.contributor.author Jasniewicz, G
dc.contributor.author Parthasarathy, M
dc.date.accessioned 2009-07-16T13:40:54Z
dc.date.available 2009-07-16T13:40:54Z
dc.date.issued 2001-08
dc.identifier.citation Szczerba, R. and Garny, S. K., eds., Post-AGB objects as a phase of stellar evolution, Astrophysics and Space Science Library, Vol. 265, Proceedings of the Torun Workshop held July 5 - 7, 2000, pp. 313 – 316 en
dc.identifier.isbn 0-7923-7145-3
dc.identifier.uri http://hdl.handle.net/2248/4646
dc.description Restricted Access
dc.description.abstract HD 179821 (IRAS 19114+0002) is classified as a moderately metal-poor ([Fe/H] = - 0.5) post-AGB star of Teff = 5660 K and also as a very massive supergiant of Teff = 6750 K. Recent detailed studies of this star are not able to establish whether HD 179821 is a low mass star in post-AGB stage of evolution or a massive (30 Solar Mass) yellow supergiant caught in between RGB and Wolf Rayet phase (Reddy and Hrivnak (1999), Jura and Werner (1999), Thévenin et.al (2000)). Our LTE analysis of the spectrum of HD 179821 and the recent radio study of circumstellar envelope by Josselin and Lébre (2000) favours the hypothesis that it is a low mass star in post-AGB stage of evolution. en
dc.language.iso en en
dc.publisher Kluwer Academic Publishers en
dc.relation.ispartofseries Astrophysics and Space Science Library; Vol. 265
dc.relation.uri http://adsabs.harvard.edu/abs/2001ASSL..265..313T en
dc.subject HD 179821 en
dc.subject Star in Post-AGB Stage en
dc.title The evolutionary status of HD 179821 en
dc.type Article en

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