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Paper: The γ Dor Star HD 108100: A Complex System Rather than a Shell Star
Volume: 318, Spectroscopically and Spatially Resolving the Components of Close Binary Stars
Page: 316
Authors: Faraggiana, R.; Gerbaldi, M.
Abstract: The γ Dor stars constitute a new class of variable stars which comprises a very low number of objects. The peculiarity of these stars consists in the character of their low frequency pulsating mode. HD 108100 is the first member of the class to show the presence of lines with broad and narrow components, which have been interpreted as signatures of a circumstellar shell or disk by Henry & Fekel (2002). A spectrum taken at the Pic du Midi Observatory shows that all the metal lines have the same complex profile; HD 108100 is a double-lined binary and the presence of circumstellar matter remains to be found.
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