Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5123r&link_type=abstract
American Astronomical Society, AAS Meeting #211, #51.23; Bulletin of the American Astronomical Society, Vol. 39, p.819
Astronomy and Astrophysics
Astronomy
Scientific paper
We present new insights into the long-term behavior of the cataclysmic variable (CV) CM Phe, based on a data set spanning nine years that includes both photometric and spectroscopic observations. CM Phe was first spectroscopically confirmed as a CV (probably of the novalike class) in 1997. Its orbital period was subsequently found from time-series photometric observations to be 0.2683 d, and its orbital light curve displays an unusual double-humped appearance with no obvious deep or narrow eclipse. CM Phe is particularly worthy of further study because the spectral type of the secondary star is different than what is expected for its orbital period. The long-term light curve shows variations in average luminosity similar to that of VY Scl stars, and is likely due to changes in the mass transfer rate. We discuss the implications of our extensive data set for placing CM Phe in the "big picture" of CV secular evolution.
Hoard Donald Wayne
Rawls Meredith L.
Wachter Stefanie
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