Bibcode
Schmidtobreick, L.; Rodríguez-Gil, P.; Long, K. S.; Gänsicke, B. T.; Tappert, C.; Torres, M. A. P.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 422, Issue 1, pp. 731-737.
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5
2012
Citations
12
Refereed citations
10
Description
BB Dor was observed during its low state in 2009. Signatures of both
binary components are revealed in the average optical spectrum; no
signature of accretion is observed. Narrow emission lines of Hα,
He I and Na D, as well as TiO absorption troughs, trace the motion of
the irradiated secondary star. We detect two additional components in
the Hα emission line that share many characteristics of similar
'satellite' lines observed in the low state of magnetic cataclysmic
variables of AM Her type. It is the first time such emission components
are detected for an SW Sex star.
Related projects
Binary Stars
The study of binary stars is essential to stellar astrophysics. A large number of stars form and evolve within binary systems. Therefore, their study is fundamental to understand stellar and galactic evolution. Particularly relevant is that binary systems are still the best source of precise stellar mass and radius measurements. Research lines
Pablo
Rodríguez Gil