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arXiv · 1612.08407

Sample of Cataclysmic Variables from 400d X-ray Survey

R. Burenin·M. Revnivtsev·A. Tkachenko·V. Vorobyev·A. Semena·A. Meshcheryakov·S. Dodonov·M. Eselevich·M. Pavlinsky
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Abstract

We present a sample of eight cataclysmic variables (CVs) identified among the X-ray sources of the 400 square degree (400d) X-ray ROSAT/PSPC survey. Based on this sample, we have obtained preliminary constraints on the X-ray luminosity function of CVs in the solar neighbourhood in the range of low luminosities, L_X=~1e29-1e30 erg/s (0.5-2 keV). We show that the logarithmic slope of the CV luminosity function in this luminosity range is less steep than that at L_X>1e31 erg/s. Our results show that of order of thousand CVs will be detected in the SRG/eROSITA all-sky survey at high Galactic latitudes, which will allow to obtain much more accurate measurements of their X-ray luminosity function.

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R. Burenin, M. Revnivtsev, A. Tkachenko, V. Vorobyev, A. Semena, A. Meshcheryakov, S. Dodonov, M. Eselevich, M. Pavlinsky. 2016-12-26. Sample of Cataclysmic Variables from 400d X-ray Survey. https://arxiv.org/abs/1612.08407

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