Abstract
Cataclysmic variables with outlying infrared magnitudes have been searched for in the USNO-B1.0 catalog. The sample was limited to objects in the northern hemisphere with (B1−R1) < 1 and (R2−I) > 3.5. The search method is described, and individual stars are considered in detail. A total of 27 variable objects have been found; 20 of them are previously known ones and 7 are new discoveries. Four of the newly found stars are cataclysmic variables, most likely dwarf novae, while the remaining three objects are pulsating red Mira or semiregular variables, including the heavily reddened star in the Pelican Nebula. The pulsation periods have been determined for two stars discovered previously by other researchers. It has been confirmed that one suspected dwarf nova is actually such a star. Prospects for the proposed search technique within the framework of the Virtual Observatory are discussed.
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Published in Russian in Pis’ma v Astronomicheskiĭ Zhurnal, 2012, Vol. 38, No. 4, pp. 283–294.
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Denisenko, D.V. Cataclysmic variables from the USNO-B1.0 catalog: Stars with outbursts on infrared palomar plates. Astron. Lett. 38, 249–259 (2012). https://doi.org/10.1134/S1063773712040020
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DOI: https://doi.org/10.1134/S1063773712040020