AI 中文总结
研究利用CAFE光谱仪监测TESS遗留的热木星候选体宿主恒星径向速度，联合建模CAFE径向速度和TESS光度，确认五颗新行星，发现相关行星系统及伴星，突出密集后续观测对确定凌越行星候选体性质的重要性。
AI 中文摘要
热木星是理解行星形成、迁移和大气的关键目标。然而，TESS任务的大多数地面后续资源都集中在确认低质量行星候选体上，许多巨行星没有质量测定或最终确认。我们使用卡拉阿托天文台的CAFE光谱仪监测那些很少有后续观测的热木星候选体宿主恒星的径向速度，以确认它们的行星性质。我们给出了七个候选体的结果。我们监测了TOI-603、TOI-1137、TOI-1837、TOI-2114、TOI-4492、TOI-5806和TOI-5811的径向速度，联合对CAFE径向速度和TESS光度进行建模，以确定凌天体的性质和属性。我们确认了五颗新行星：TOI-603 b（$33.0^{+6.5}_{-6.2}$ M$_{\oplus}$，16.2天）、TOI-2114 b（$1.01^{+0.14}_{-0.12}$ M$_{\rm Jup}$，6.2天）、TOI-4492 b（$5.92^{+0.67}_{-0.64}$ M$_{\rm Jup}$，4.4天）、TOI-5806 b（$2.77^{+0.34}_{-0.32}$ M$_{\rm Jup}$，3.2天）和TOI-5811 B b（$0.81^{+0.11}_{-0.10}$ M$_{\rm Jup}$，6.3天）。TOI-603 b位于“海王星稀树草原”，而其他四颗是围绕略微演化恒星运行的热木星。我们发现TOI-5811.01是一颗凌越附近束缚伴星TOI-5811 B的行星（即TOI-5811 B b），并在投影距离248 au处识别出TOI-5806的一颗恒星伴星，使两者都成为S型行星系统。TOI-1837.01是一个食双星，而TOI-1137.01仍无定论。这五颗确认的行星围绕明亮恒星（G = 8.6 - 10.2等）运行，四颗是大气研究的优秀目标，传输光谱指标高于90。这些结果突出了密集后续观测对于确定凌越行星候选体性质的重要性。
英文摘要
Hot Jupiters are key targets for understanding planet formation, migration, and atmospheres. Yet, most ground-based follow-up resources for the TESS mission are focused on confirming low-mass planet candidates, leaving many giant planets without mass determinations or definitive confirmation. We use the \cafe{} spectrograph at Calar Alto Observatory to monitor the radial velocity of stars hosting hot-Jupiter candidates that have received little follow-up, aiming to confirm their planetary nature. We present results for seven candidates. We monitored the radial velocity of TOI-603, TOI-1137, TOI-1837, TOI-2114, TOI-4492, TOI-5806, and TOI-5811, jointly modeling the CAFE radial velocities and TESS photometry to determine the nature and properties of the transiting objects. We confirm five new planets: TOI-603 b ($33.0^{+6.5}_{-6.2}$ M$_{\oplus}$, $16.2$ d), TOI-2114 b ($1.01^{+0.14}_{-0.12}$ M$_{\rm Jup}$, $6.2$ d), TOI-4492 b ($5.92^{+0.67}_{-0.64}$ M$_{\rm Jup}$, $4.4$ d), TOI-5806 b ($2.77^{+0.34}_{-0.32}$ M$_{\rm Jup}$, $3.2$ d), and TOI-5811 B b ($0.81^{+0.11}_{-0.10}$ M$_{\rm Jup}$, $6.3$ d). TOI-603 b lies in the "Neptune savanna", whereas the other four are hot Jupiters orbiting slightly evolved stars. We find TOI-5811.01 to be a planet transiting the nearby bound companion TOI-5811 B (hence TOI-5811 B b), and identify a stellar companion to TOI-5806 at a projected separation of 248 au, making both S-type planetary systems. TOI-1837.01 is an eclipsing binary, while TOI-1137.01 remains inconclusive. The five confirmed planets orbit bright stars (${\rm G}=8.6-10.2$~mag), and four are excellent targets for atmospheric studies, with transmission spectroscopy metrics above 90. These results highlight the importance of intensive follow-up observations to establish the nature of transiting planet candidates.
CommentsAccepted for publication in A&A. 23 pages (12 of main text), 11 figures, 7 tables
