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Epsilon Aurigae in eclipse. I - Ultraviolet spectroscopy during INGRESS and totality

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dc.contributor.author Parthasarathy, M
dc.contributor.author Lambert, D. L
dc.date.accessioned 2008-12-19T15:00:40Z
dc.date.available 2008-12-19T15:00:40Z
dc.date.issued 1983-12
dc.identifier.citation Publications of Astronomical Society of the Pacific, Vol. 95, pp. 1012 - 1018 en
dc.identifier.issn 0004-6280
dc.identifier.uri http://hdl.handle.net/2248/4155
dc.description.abstract Epsilon Aurigae is a long-period eclipsing system containing a F0 Ia supergiant and an unseen slightly less-massive secondary. A primary eclipse began in mid-1982 with the unseen companion passing in front of the supergiant. Low-resolution ultraviolet (IUE) spectra of Epsilon Aur in 1982 and early 1983 provide eclipse light curves extending into the total phase of the current eclipse. The depth of eclipse from 3000 A to 1700 A is slightly deeper than at visual wavelengths (0.8 m). The depth declines for wavelengths less than 1700 A and is just 0.2 m at wavelengths less than 1300 A. The disappearance of the eclipse at wavelengths less than 1300 A may be attributed to a hot star or spot within the disk-shaped secondary. A main-sequence star of spectral type B0 accounts for the observations. However, an alternative site of the ultraviolet excess may be the primary's upper photosphere or chromosphere. en
dc.language.iso en en
dc.publisher Astronomical Society of the Pacific en
dc.relation.uri http://adsabs.harvard.edu/abs/1983PASP...95.1012P en
dc.relation.uri http://dx.doi.org/10.1086/131283 en
dc.subject Eclipsing Binary Stars en
dc.subject Stellar Spectrophotometry en
dc.subject Ultraviolet Spectra en
dc.subject Hot Stars en
dc.subject Light Curve en
dc.subject Main Sequence Stars en
dc.subject Supergiant Stars en
dc.subject IUE en
dc.title Epsilon Aurigae in eclipse. I - Ultraviolet spectroscopy during INGRESS and totality en
dc.type Article en

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