Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389..704s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 389, April 20, 1992, p. 704-713. Research supported by NASA.
Astronomy and Astrophysics
Astrophysics
46
Accretion Disks, Cataclysmic Variables, Stellar Mass Accretion, Stellar Rotation, White Dwarf Stars, X Ray Binaries, H Alpha Line, Light Curve, Monte Carlo Method, Stellar Orbits, Stellar Spectrophotometry
Scientific paper
Evidence from a concurrent X-ray/optical observing program is presented which indicates that the orbital period of the anomalous AM Her-type cataclysmic variable H0538 + 608 (BY Cam) differs from the rotational period by 1.3 +/- 0.1 percent. This finding would explain much of the unusual behavior previously exhibited in optical photometry and polarimetry. The model proposed by Ishida et al. (1991) is developed further using observations of accretion and the primary characteristics of optical and X-ray light curves and radial velocity measures of H-alpha. An optical QPO with a period of about 30 min was seen on two nights and possible causes of it are discussed.
Bradt Hale V.
Ishida Manabu
Ohashi Takuma
Remillard Ron A.
Silber Andrew
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