Eight Exoplanet Candidates in SAO Survey
Galazutdinov, G. A.;
Beskin, G. M.;
Romanyuk, I. I.;
Korablev, O. I.;
Yakovlev, O. Ya.;
Valeev, A. F.;
Valyavin, G. G.;
Tavrov, A. V.;
Aitov, V. N.;
Mitiani, G. Sh.;
Vlasyuk, V. V.;
Emelyanov, E. V.;
Fatkhullin, T. A.;
Sasyuk, V. V.;
Perkov, A. V.;
Bondar', S. F.;
Burlakova, T. E.;
Fabrika, S. N.
Russia
Abstract
We report eight new exoplanet candidates discovered at the Special Astrophysical Observatory of the Russian Academy of Sciences using the transit technique. Photometric observations were performed with a 50-cm robotic telescope during the second half of 2020. Transits with depths of $$\Delta m=0\overset{\textrm{m}}{.}056{-}0\overset{\textrm{m}}{.}173$$ and periods $$P=18\overset{\textrm{h}}{.}8{-}8\overset{\textrm{d}}{.}3$$ were detected in $$m=14\overset{\textrm{m}}{.}3$$–$$18\overset{\textrm{m}}{.}8$$ stars. All the stars considered are dwarfs with radii $$R_{*}=0.4{-}0.6R_{\odot}$$ (with an uncertainty of up to $$1.1 R_{\odot}$$ for a single star). We use simulations to estimate 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. We report the transit light curves for two stars obtained in 2022 based on individual observations.
2023
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Astrophysical Bulletin
Gaia
3
