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Simultaneous photometry and spectroscopy of the rapid variability of the Be star η Cen*

Published online by Cambridge University Press:  26 May 2016

S. Štefl ,
D. Baade ,
P. Harmanec  and
L. A. Balona
S. Štefl
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-251 65 Ondřejov, Czech Republic
D. Baade
Affiliation:
European Southern Observatory Karl-Schwarzschild-Str. 2, D-85748 Garching bei München, Germany
P. Harmanec
Affiliation:
Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-251 65 Ondřejov, Czech Republic
L. A. Balona
Affiliation:
South African Astronomical Observatory P.O. Box 9, Observatory 7935, Cape Town, South Africa

Extract

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The reality of the previously reported triple-wave light curve (Cuypers et al. 1989, A&A Suppl. 81, 151), and relations between rapid line profile and brightness variations of the B1-2III-Ve star η Cen (HD 127972) were investigated by means of simultaneous high-resolution spectroscopy (4 nights, 86 Si III 455.2622 nm profiles) and two-station uvby photometry (14 nights) secured in 1992. To this database were added the uvby photometry by Cuypers et al. and unpublished b observations by L.A.B. from 1988–1991.

Type
5. Be Stars: Spectroscopy and Photometry
Information
Symposium - International Astronomical Union , Volume 162: Pulsation, Rotation and Mass Loss in Early-Type Stars , 1994 , pp. 307 - 308
Copyright
Copyright © Kluwer 1994