Discovery of another Am-Herculis Variable in the Period Gap
Wickramasinghe, D.T., Ferrario, L., Bailey, J., Drissen, L., Dopita, M.A., Shara, M. and Hough, J.
(1993)
Discovery of another Am-Herculis Variable in the Period Gap.
L29-L34.
ISSN 0035-8711
Recently, Buckley et al. drew attention to a new AM Her variable, RE1938 - , discovered by the ROSAT survey with a period of 2.33 h which places it in the middle of the usual 2-3 h period gap for cataclysmic variables. Here, we report the discovery of yet another AM Her variable, V2009 -65.5, with a period of 2.66 h, also within the period gap. We argue that the anomalously high proportion of AM Hers within the period gap indicates that the canonical magnetic braking mechanism used to explain the orbital evolution of other CVs may not be applicable to the AM Hers. Possible alternative models are discussed.
Item Type | Article |
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Date Deposited | 26 Jul 2024 10:58 |
Last Modified | 26 Jul 2024 10:58 |
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