Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102..683t&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 102, Aug. 1991, p. 683-687.
Astronomy and Astrophysics
Astronomy
23
Cataclysmic Variables, Eclipsing Binary Stars, H Alpha Line, Novae, Stellar Spectra, Emission Spectra, Radial Velocity, Stellar Evolution, Stellar Luminosity
Scientific paper
Spectroscopic observations of a novalike variable are reported. The emission-line radial velocities yield an orbital period of 0.156 d (= 3.74 hr), in agreement with the eclipse timings of Andronov et al. (1989). The H-alpha emission shows abrupt increases in equivalent width around the eclipse phase; it is not eclipsed as strongly as the continuum. The radial velocities have a pronounced (about 57 deg) phase lag compared to the eclipse. This object may be a somewhat fainter example of a common, but very puzzling, class of luminous novalike variables, which includes SW Sex, DW UMa, V1315 Aql, and PG0027 + 260.
Davis Monica K.
Ringwald Fred A.
Thorstensen John R.
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