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Your search keyword '"Sasyuk, V. V."' showing total 3 results
Start Over Author "Sasyuk, V. V." Publication Type Electronic Resources
3 results on '"Sasyuk, V. V."'

1. Catalog of variable stars in the WD 0009+501 and GRW +708247 fields based on photometric survey data on transiting exoplanets

Author

Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Aitov, V. N., Mitiani, G. Sh., Fatkhullin, T. A., Beskin, G. M., Tavrov, A. V., Korablev, O. I., Galazutdinov, G. A., Vlasyuk, V. V., Emelianov, E. V., Sasyuk, V. V., Perkov, A. V., Bondar, S. F., Burlakova, T. E., Fabrika, S. N., Romanyuk, I. I., Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Aitov, V. N., Mitiani, G. Sh., Fatkhullin, T. A., Beskin, G. M., Tavrov, A. V., Korablev, O. I., Galazutdinov, G. A., Vlasyuk, V. V., Emelianov, E. V., Sasyuk, V. V., Perkov, A. V., Bondar, S. F., Burlakova, T. E., Fabrika, S. N., and Romanyuk, I. I.

Abstract

We present a catalog of 150 variable stars, including 13 stars with exoplanet candidates. 37 stars were identified as variables for the first time. As a result of a 2.5-year photometric survey of exoplanets, we have obtained and analyzed light curves for almost 50 thousand stars in fields around white dwarfs WD 0009+501 and GRW +708247. Here we describe observations and data processing, the search for variable stars, their cross-identification with other catalogs and classification. The catalog is published in open access and contains the primary classification of variability, light curves and their parameters., Comment: 10 pages, 3 figures, 2 tables

Published
2024
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2. Eight exoplanet candidates in SAO survey

Author

Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Tavrov, A. V., Aitov, V. N., Mitiani, G. Sh., Beskin, G. M., Vlasyuk, V. V., Korablev, O. I., Galazutdinov, G. A., Emelianov, E. V., Fatkhullin, T. A., Sasyuk, V. V., Perkov, A. V., Bondar, S. F., Burlakova, T. E., Fabrika, S. N., Romanyuk, I. I., Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Tavrov, A. V., Aitov, V. N., Mitiani, G. Sh., Beskin, G. M., Vlasyuk, V. V., Korablev, O. I., Galazutdinov, G. A., Emelianov, E. V., Fatkhullin, T. A., Sasyuk, V. V., Perkov, A. V., Bondar, S. F., Burlakova, T. E., Fabrika, S. N., and Romanyuk, I. I.

Abstract

Here we present eight new candidates for exoplanets detected by the transit method at the Special Astrophysical Observatory of the Russian Academy of Sciences. Photometric observations were performed with a 50-cm robotic telescope during the second half of 2020. We detected transits with depths of $\Delta m = 0.056-0.173^m$ and periods $P = 18.8^h-8.3^d$ in the light curves of stars with magnitudes of $m = 14.3-18.8^m$. All considered stars are classified as dwarfs with radii of $R_* = 0.4-0.6 R_{sun}$ (with the uncertainty for one star up to $1.1 R_{sun}$). We estimated the candidate radii (all are greater than 1.4 times the Jovian radius), semi-major axes of their orbits ($0.012-0.035 AU$), and other orbital parameters by modelling. We report the light curves with transits for two stars obtained in 2022 based on individual observations., Comment: 16 pages, 14 figures, 3 tables

Published
2023
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3. Exoplanet two square degree survey with SAO RAS robotic facilities

Author

Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Tavrov, A. V., Aitov, V. N., Mitiani, G. Sh., Korablev, O. I., Galazutdinov, G. A., Beskin, G. M., Emelianov, E. V., Fatkhullin, T. A., Vlasyuk, V. V., Sasyuk, V. V., Perkov, A. V., Bondar, S., Burlakova, T. E., Fabrika, S. N., Romanyuk, I. I., Yakovlev, O. Ya., Valeev, A. F., Valyavin, G. G., Tavrov, A. V., Aitov, V. N., Mitiani, G. Sh., Korablev, O. I., Galazutdinov, G. A., Beskin, G. M., Emelianov, E. V., Fatkhullin, T. A., Vlasyuk, V. V., Sasyuk, V. V., Perkov, A. V., Bondar, S., Burlakova, T. E., Fabrika, S. N., and Romanyuk, I. I.

Abstract

We used the 0.5-m robotic telescopes located at the Special Astrophysical Observatory of the Russian Academy of Sciences for monitoring two square degrees of the sky with the aim of detecting new exoplanets. A dimming of the visible brightness is expected due to the exoplanets transiting their host stars. We analyzed about 25000 raw images of stars taken in the period between August 2020 and January 2021 and plotted the light curves for about 30000 stars on a half-year timescale. Five newly discovered exoplanet candidates are being investigated to determine their transit event parameters. We also present the light curves for dozens of binary stars., Comment: 11 pages, 9 figures, to be published in Frontiers in Astronomy and Space Sciences

Published
2022
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