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Period variations the intermediate polars EX Hya, FO Aqr and RXS J180340.0+401214
Vitalii V. Breus, Ivan L. Andronov, Tibor Hegedus +4
We present results of CCD photometric study of the intermediate polars FO Aqr, EX Hya and RXS J180340.0+401214 = USNO-A2.0 1275-09738647 and corresponding corrected ephemerids.
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IV: The Fourth Year (2011-2012)
Taichi Kato, Franz-Josef Hambsch, Hiroyuki Maehara +85
Continuing the project described by Kato et al. (2009, arXiv:0905.1757), we studied 86 SU UMa-type dwarf novae. We confirmed the general trends such as the relation between period…
Recent photometry of symbiotic stars - XIII
A. Skopal, S. Shugarov, M. Vanko +4
We present new multicolour (UBVRcIc) photometric observations of classical symbiotic stars, EG And, Z And, BF Cyg, CH Cyg, CI Cyg, V1329 Cyg, TX CVn, AG Dra, Draco C1, AG Peg and A…
The quest for companions to post-common envelope binaries. II. NSVS14256825 and HS0705+6700
K. Beuermann, P. Breitenstein, B. Debski +20
We report new mid-eclipse times of the two close binaries NSVS14256825 and HS0705+6700, harboring an sdB primary and a low-mass main-sequence secondary. Both objects display clear…
Photometric Study of Two Recently Discovered Variable Stars in the Field of BS Cas
Natalia A. Virnina, Radek Kocian, Lubomir Hambalek +3
Two recently discovered variable stars (CzeV134 = GSC 3682 0018 = USNO-A2.0 1425-1870026 and CzeV135 = GSC 3682 2051 = USNO-A2.0 1425-1825909 = V1094 Cas), which have been identifi…