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Investigation of the new cataclysmic variable 1RXS J180834.7+101041 |
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| Authors: | D G Yakin V F Suleimanov N V Borisov V V Shimanskii I F Bikmaev |
| Institution: | 1.Kazan Federal University,Kazan,Russia;2.Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Physics,Eberhard Karls University,Tübingen,Germany;3.Special Astrophysical Observatory,Russian Academy of Sciences,Nizhnii Arkhyz,Karachai-Cherkessian Republic, Russia;4.Academy of Sciences of Tatarstan,Kazan,Russia |
| Abstract: | 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 ± 0.22M ⊙ and M RD = 0.14 ± 0.02M ⊙) and the binary inclination (i = 78° ± 1.5°) 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. |
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