标题： 巨型外行星 transit 观测质量（GOT 'EM）巡天：III. 恢复并确认围绕 TOI-2010 运行的温带、适度偏心的单次过境木星轨道行星 显示英文标题

标题： Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey: III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-Transit Jupiter Orbiting TOI-2010

摘要： 像TESS任务这样的大规模系外行星探测计划是发现大量系外行星候选者的有力工具。由于观测基线的不可避免限制，单次过境事件在最终的候选者列表中很常见。这些单次过境的行星往往因为未知的轨道周期以及随之而来的后续观测安排困难而无法得到验证。在某些情况下，径向速度（RV）的后续观测可以足够约束周期，从而在未来实现目标化的凌星探测。 我们介绍了这样一个行星的确认：TOI-2010 b。将近三年的径向速度观测数据确定了它的周期，使得使用近地天体监视卫星（NEOSSat）能够进行宽窗口搜索，并检测到额外的凌星事件。在更晚的TESS扇区中的另一项检测进一步巩固了我们对最终参数的估计。 我们发现TOI-2010 b是一颗木星质量（$M_P = 1.29 \ M_{\rm Jup}$, $R_P = 1.05 \ R_{\rm Jup}$）的行星，处于一个适度偏心的轨道（$e = 0.21$），周期为$P = 141.83403$天。假设一个简单的模型，没有反照率且完全的热重分布，从远拱点到近拱点的平衡温度范围约为360 K至450 K。它宽广的轨道和明亮的宿主恒星（$V=9.85$）使TOI-2010 b成为未来低太阳辐射大气分析的理想试验平台。 显示英文摘要

摘要： Large-scale exoplanet surveys like the TESS mission are powerful tools for discovering large numbers of exoplanet candidates. Single-transit events are commonplace within the resulting candidate list due to the unavoidable limitation of observing baseline. These single-transit planets often remain unverified due to their unknown orbital period and consequent difficulty in scheduling follow up observations. In some cases, radial velocity (RV) follow up can constrain the period enough to enable a future targeted transit detection. We present the confirmation of one such planet: TOI-2010 b. Nearly three years of RV coverage determined the period to a level where a broad window search could be undertaken with the Near-Earth Object Surveillance Satellite (NEOSSat), detecting an additional transit. An additional detection in a much later TESS sector solidified our final parameter estimation. We find TOI-2010 b to be a Jovian planet ($M_P = 1.29 \ M_{\rm Jup}$, $R_P = 1.05 \ R_{\rm Jup}$) on a mildly eccentric orbit ($e = 0.21$) with a period of $P = 141.83403$ days. Assuming a simple model with no albedo and perfect heat redistribution, the equilibrium temperature ranges from about 360 K to 450 K from apoastron to periastron. Its wide orbit and bright host star ($V=9.85$) make TOI-2010 b a valuable test-bed for future low-insolation atmospheric analysis.