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arXiv · 1912.07978

Discovery of deep eclipses in the cataclysmic variable IPHAS J013031.89+622132.3

V. P. Kozhevnikov
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Abstract

I performed photometric observations of the poorly studied cataclysmic variable IPHAS J013031.89+622132.3 and discovered very deep eclipses. I obtained observations over 14 nights for a total time of 50 hours during a time span of 6 months. Thanks to the long observation interval, I determined the orbital period with high precision, Porb=0.14935014+/-0.00000020 d. I derived the eclipse ephemeris, which, thanks to the precision of the orbital period, has a formal validity of 300 years. The average eclipse depth was 1.88+/-0.07 mag. The prominent parts of the eclipses were smooth and symmetrical. The average eclipse width, including extended asymmetric eclipse wings, was 0.18+/-0.01 phases or 40+/-2 min. The average orbital light curve did not show a prominent orbital hump. Because no dwarf nova outburst occurred during the 6 months of monitoring, this cataclysmic variable is likely to be a nova-like variable.

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V. P. Kozhevnikov. 2019-12-17. Discovery of deep eclipses in the cataclysmic variable IPHAS J013031.89+622132.3. https://doi.org/10.1016/j.newast.2019.101350

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