Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2012-02-17
Astronomy Letters, 2011, 37, 845-857
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
22 pages, 9 figures, 2 tables, published in Astronomy Letters, 2011, 37, 845-857
Scientific paper
We present the results of our photometric and spectroscopic studies of the new eclipsing cataclysmic variable star 1RXS J180834.7+101041. Its spectrum exhibits double-peaked hydrogen and helium emission lines. The Doppler maps constructed from hydrogen lines show a nonuniform distribution of emission in the disk similar to that observed in IP Peg. This suggests that the object can be a cataclysmic variable with tidal density waves in the disk. We have determined the component masses (M_WD =0.8 \pm 0.22 M_sun and M_RD =0.14 \pm 0.02 M_sun) and the binary inclination (i =78 \pm 1.5 deg) based on well-known relations between parameters for cataclysmic variable stars. We have modeled the binary light curves and showed that the model of a disk with two spots is capable of explaining the main observed features of the light curves.
Bikmaev I. F.
Borisov N. V.
Shimanskii V. V.
Suleimanov Valery F.
Yakin D. G.
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