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.

中文翻译：

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SAO 调查中的八颗系外行星候选者

摘要

我们报告了在俄罗斯科学院特殊天体物理天文台使用凌日技术发现的八颗新的系外行星候选者。2020 年下半年使用 50 厘米机器人望远镜进行了光度观测。凌日深度为\(\Delta m=0\overset{\textrm{m}}{.}056{-}0\overset{\ textrm{m}}{.}173\)和句点\(P=18\overset{\textrm{h}}{.}8{-}8\overset{\textrm{d}}{.}3\)在\(m=14\overset{\textrm{m}}{.}3\) – \(18\overset{\textrm{m}}{.}8\) 星中检测到 。所有考虑的恒星都是矮星，半径为\(R_{*}=0.4{-}0.6R_{\odot}\)（不确定性高达 \(1.1 R_{\odot}\）一颗星）。我们使用模拟来估计候选半径（均大于木星半径的 1.4 倍）、它们轨道的半长轴 (0.012–0.035 AU) 和其他轨道参数。我们报告了 2022 年根据个别观测获得的两颗恒星的凌日光变曲线。