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Period dependent variations of the shell spectrum of V923 AQL

Published online by Cambridge University Press:  26 May 2016

Lubomir Iliev
Lubomir Iliev*
Affiliation:
Bulgarian Academy of Sciences Institut of Astronomy 72 Tsarigradsko Shosse Blvd. BG-1784 Sofia, Bulgaria tel./fax (+359)-2-758-927 e_mail liliev@bgearn.bitnet

Extract

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V923 Aql is a well known Be star with strong shell spectrum. It was included in the list of shell stars of Merrill and Burwell (1949). A detailed study of the radial velocity variations in the spectrum of the star based on wide collection of spectral observations was presented in the work of Koubsky et al. (1988). In this work an orbital period of 214.756 days was suggested for the binary system consisting of a B5–7 primary and low mass (0.5 Msol).

Keywords

Be and shell starsbinary stars
Type
6. Be Stars: Circumstellar Environment
Information
Symposium - International Astronomical Union , Volume 162: Pulsation, Rotation and Mass Loss in Early-Type Stars , 1994 , pp. 374 - 375
Copyright
Copyright © Kluwer 1994 

References

Horn, J., Iliev, I., Lions, R.; 1989, Bull. Astron. Inst. Czechosl., vol.40, p.31.Google Scholar
Koubsky, P., Gulliver, A.F., Harmanec, P., Ballereau, D., Chauville, J., Graf, T., Merrill, B. and Burwell, C.; 1949, Astrophys. J., vol. 110, p.387.Google Scholar
Merrill, B.W.; 1952, Astrophys. J. vol.116, p.501.Google Scholar
Ringuelet, A. and Sahade, J.; 1984, Rev. Mex. Astron. Astrof., vol.6, p.208.Google Scholar