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The chemical composition and circumstellar environment of the variable star QY sge

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dc.contributor.author Goswami, A
dc.contributor.author Kameswara Rao, N
dc.contributor.author Lambert, D. L
dc.date.accessioned 2010-01-13T12:30:09Z
dc.date.available 2010-01-13T12:30:09Z
dc.date.issued 2004
dc.identifier.citation Kurtz, D. W and Pollard, K. R eds., Variable Stars in the local group: IAU Colloquium 193, Proceedings of a colloquium held at University of Canterbury, ASP Conference Series Vol. 310, Christchurch, New Zealand, 6 - 11, July, 2003, pp. 430 - 434 en
dc.identifier.isbn 1-58381-162-1
dc.identifier.uri http://hdl.handle.net/2248/4976
dc.description Open Access
dc.description.abstract Chemical composition studies of the variable star QY Sge show abundance anomalies suggestive of the pattern exhibited by the warmer RV Tau variables. Abundance analysis indicates a near-solar atmosphere with highly condensable elements depleted by several factors. Evidence of broad Na D emission features in its spectrum, a characteristic feature of RCrB stars taken at minimum, however, raises the question of its spectral classification. We address this question through a comparative analysis of its spectrum with those of gamma Cyg, 89 Her and R CrB taken at minimum., in addition to abundance analysis. We also discuss a possible physical scenario of the circumstellar environment accounting for the characteristics of the distinct spectroscopic features. en
dc.language.iso en en
dc.publisher Astronomical Society of the Pacific en
dc.relation.ispartofseries Astronomical Society of the Pacific Conference Series;Vol. 310
dc.relation.uri http://www.aspbooks.org/a/volumes/article_details/?paper_id=1764 en
dc.rights © Astronomical Society of the Pacific en
dc.subject Chemical Composition en
dc.subject Variable Star QY Sge en
dc.subject RV Tau Variables en
dc.subject Solar Atmosphere en
dc.subject Spectrum en
dc.subject RCrB Stars en
dc.subject Spectral Classification en
dc.subject Circumstellar Environment en
dc.subject Spectroscopic Features en
dc.title The chemical composition and circumstellar environment of the variable star QY sge en
dc.type Article en

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