US 943 - A 19th mag eclipsing cataclysmic variable with a period of 2 HR 3.8 min

Details US 943 - A 19th mag eclipsing cataclysmic variable with a period of 2 HR 3.8 min US 943 - A 19th mag eclipsing cataclysmic variable with a period of 2 HR 3.8 min

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.233...79h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 233, July 1, 1988, p. 79-86. Research supported by the

Astronomy and Astrophysics

Astronomy

26

Cataclysmic Variables, Dwarf Novae, Eclipsing Binary Stars, Light Curve, Astronomical Spectroscopy, Charge Coupled Devices, Spectral Bands, Stellar Orbits, Time Measurement, White Dwarf Stars

Scientific paper

The high-latitude, V equals about 19.5, blue variable star US 943 is found to be an eclipsing binary with an orbital period of 2.06 hr. The light curve is dominated by an orbital hump which has an amplitude of 0.9 mag in V and is centered about 0.17 orbital cycles before the 1.5-mag deep eclipse. There is evidence that the eclipse has at least two components. The overall appearance of the star is that of a dwarf nova in quiescence, a conclusion that is supported by the observation of a subsequent bright state (V equals about 15) suggesting a dwarf nova outburst.

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