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Is the B[e] Star V2028 Cyg a Binary?

Published online by Cambridge University Press:  23 April 2012

Jan Polster ,
Daniela Korčáková ,
Viktor Votruba ,
Petr Škoda ,
Miroslav Šlechta  and
Blanka Kučerová
Jan Polster
Affiliation:
Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, CZ
Daniela Korčáková
Affiliation:
Astronomical Institute, Charles University, V Holešovičkách 2, 180 00 Praha 8, CZ
Viktor Votruba
Affiliation:
Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, CZ Astronomical Institute of the AV ČR, Fričova 298, 251 65 Ondřejov, CZ email: [email protected], [email protected]
Petr Škoda
Affiliation:
Astronomical Institute of the AV ČR, Fričova 298, 251 65 Ondřejov, CZ email: [email protected], [email protected]
Miroslav Šlechta
Affiliation:
Astronomical Institute of the AV ČR, Fričova 298, 251 65 Ondřejov, CZ email: [email protected], [email protected]
Blanka Kučerová
Affiliation:
Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, CZ
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Abstract

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V2028 Cyg shows a B[e] phenomenon. Due to the presence of both cool (K7III) and hot (B4III) components in the spectra, it is supposed to be a binary. Our modelling of the time variability of Hα line bisectors shows, however, that this hybrid spectrum can originate in one star, which is surrounded by a disc.

Keywords

stars: emission-lineB[e]binaries: spectroscopicstars: individual (V2028 Cyg)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 309 - 310
Copyright
Copyright © International Astronomical Union 2012

References

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