MT Serpentis: A pre-cataclysmic variable or not?

Details MT Serpentis: A pre-cataclysmic variable or not? MT Serpentis: A pre-cataclysmic variable or not?

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aspc..261..273b&link_type=abstract

The Physics of Cataclysmic Variables and Related Objects, ASP Conference Proceedings, Vol. 261. Edited by B. T. Gänsicke, K. Beu

Physics

1

Scientific paper

MT Ser, the central star of the planetary nebula Abell 41, shows photometric variations with a period of P1 = 2h 43m (Grauer & Bond 1983, ApJ, 271, 259). They are interpreted as due to a reflection effect in a close binary consisting of a compact hot component and a cool star (Model 1). This configuration would make MT Ser the pre-cataclysmic variable with the shortest known orbital period. However, an alternative scenario of a system consisting of two hot subdwarfs in an orbit with period P2 = 2 P1 is also possible (Model 2). The light curve can then be explained by ellipsoidal variations and (partial) eclipses.

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