New Orbital Periods for Seven Cataclysmic Variable Stars

Details New Orbital Periods for Seven Cataclysmic Variable Stars New Orbital Periods for Seven Cataclysmic Variable Stars

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21349107t&link_type=abstract

American Astronomical Society, AAS Meeting #213, #491.07; Bulletin of the American Astronomical Society, Vol. 41, p.468

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report spectroscopic orbital periods for seven cataclysmic variable stars (CVs); all the objects discussed here have periods longer than five hours. In most of the objects we detect the secondary star's spectrum and in several we can track the secondary's radial velocity. The stars and their periods are: FO Aql (5.23 hr), V344 Ori (5.53 h), PQ Aql (5.922 h), V792 Cyg (7.13 h), NSVS 1057+09 (9.03 h) , V478 Her (15.097 h), and V1082 Sgr (20.821 h). V478 Her has been classified as a possible SU UMa-type dwarf nova, but the period we find is much longer than those of SU UMa stars, so this classification is apparently mistaken. We gratefully acknowledge support from the National Science Foundation, through grants AST-0307413 and AST-0708810.

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