40 citations · 296 across the 65 of their papers we have counts for
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Determination of characteristics of newly discovered eclipsing binary 2MASS J18024395 +4003309 = VSX J180243.9+400331
Ivan L. Andronov, Vitalii V. Breus, Stanislaw Zola
During processing the observations of the intermediate polar 1RXS J180340.0+401214, obtained 26.05.2012 at the 60-cm telescope of the Mt. Suhora observatory (Krakow, Poland), varia…
Two-Component Variability of the Semi-Regular Pulsating Star U Delphini
Ivan L. Andronov, Lidia L. Chinarova
Photometric analysis of photometric variability of the semi-regular pulsating variable U Del is analyzed. From the international AFOEV database, 6231 brightness values in the time…
Photometric Behavior of Five Long-Period Pulsating Stars
Larisa S. Kudashkina, Ivan L. Andronov, Lidia V. Grenishena
The variation of average brightness during the time and the variation of the amplitude of the Mira-type stars T Cep, X CrB, U UMi, U Cyg, BG Cyg is studied. For the research, the o…
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.
Determination of Cycle Length of Quasi-Periodic Signals. Application to Semiregular Variables
Ivan L. Andronov, Lidia L. Chinarova
We review methods for determination of "quasi-periods" (or "cycle length") of signals of low coherence. Such type of variability was called "cyclic" for semi-regular red variables,…
Special Shapes for Optimal Phenomenological Approximations of Astronomical Signals
Ivan L. Andronov
We discuss different methods for phenomenological approximations of signals with (generally) irregularly spaced arguments. Such signals may be classified as periodic, multi-periodi…