Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon: I. V2028 Cyg

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Authors	POLSTER Jan KORČÁKOVÁ Daniela VOTRUBA Viktor ŠKODA Petr ŠLECHTA Miroslav KUČEROVÁ Blanka KUBÁT Jiří
Year of publication	2012
Type	Article in Periodical
Magazine / Source	Astronomy and Astrophysics
MU Faculty or unit	Faculty of Science
Citation
Web	A&A
Doi	http://dx.doi.org/10.1051/0004-6361/201117210
Field	Astronomy and astrophysics
Keywords	Line profiles binaries general circumstellar matter Stars emission-line B[e] Stars individual V2028 Cyg
Attached files	aa17210-11_tap.pdf
Description	We present results of nearly six years of spectroscopic observations of the Be star V2028 Cyg. The presence of the cold-type absorption lines combined with a hot-type spectrum indicate the binarity of this object. Since B[e] stars are embedded in an extended envelope, the usage of common stellar atmosphere models for the analysis is quite inappropriate. Therefore, we focus on the analysis of the long-term spectral line variations in order to determine the nature of this object.
Related projects:	Physics of Sun, stars, and stellar systems Fyzika hvězd a hvězdných soustav