The orbital periods of AA Dor and NY Vir

Details The orbital periods of AA Dor and NY Vir The orbital periods of AA Dor and NY Vir

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.412..487k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 412, Issue 1, pp. 487-491.

Astronomy and Astrophysics

Astronomy

5

Binaries: Eclipsing, Stars: Individual: Aa Dor, Stars: Individual: Ny Vir

Scientific paper

New timings of eclipses made between 2000 and 2010 are presented for two binary systems with hot subdwarf primary stars. In the case of AA Dor, an sdOB star with a very cool secondary, the period is found to be constant at a level of about 10-14 d per orbit. In the case of NY Vir, a rapidly pulsating sdBVr with a cool companion, the period is discovered to be decreasing at a rate of -11.2 × 10-13 d per orbit.

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