Discovery of Hα satellite emission in a low state of the SW Sextantis star BB Doradus
Schmidtobreick, Linda, Rodríguez-Gil, P., Long, Knox S., Gänsicke, B. T. (Boris T.), Tappert, C. and Torres, M. A. P.. (2012) Discovery of Hα satellite emission in a low state of the SW Sextantis star BB Doradus. Monthly Notices of the Royal Astronomical Society, Vol.422 (No.1). pp. 731-737. ISSN 0035-8711
WRAP_Gansicke_j.1365-2966.2012.20783.x.pdf - Published Version
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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2012.20653.x
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, Hei and NaD, 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. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS.
|Item Type:||Journal Article|
|Subjects:||Q Science > QB Astronomy|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Monthly Notices of the Royal Astronomical Society|
|Publisher:||Wiley-Blackwell Publishing, Inc|
|Page Range:||pp. 731-737|
|Access rights to Published version:||Restricted or Subscription Access|
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