TOI-836：一颗邻近 K 型矮星旁 transiting 的超级地球与迷你海王星
地球与行星天体物理
2023-02-15 v1
摘要
我们基于 TESS 第 11 和第 38 扇区的数据，报告利用凌星法发现两颗系外行星环绕 TOI-836（TIC 440887364）。TOI-836 是一颗明亮（ mag）、高自行（ mas yr）、低金属丰度（[Fe/H]）的 K 型矮星，质量为 M，半径为 R。我们利用多种设施获得了测光后续观测，并使用这些数据集确定内侧行星 TOI-836 b 是一颗半径为 R 的超级地球，位于 3.82 天轨道，恰好处于所谓的“半径谷”中。外侧行星 TOI-836 c 是一颗半径为 R 的迷你海王星，轨道周期 8.60 天。径向速度测量显示 TOI-836 b 质量为 M，而 TOI-836 c 质量为 M。测光观测显示 TOI-836 c 存在约 20 分钟的凌星时间变分（TTV），而 TOI-836 b 未检测到 TTV。行星 TOI-836 c 的 TTV 可能由一颗未被探测到的外部行星引起。
引用
@article{arxiv.2208.07328,
title = {TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf},
author = {Faith Hawthorn and Daniel Bayliss and Thomas G. Wilson and Andrea Bonfanti and Vardan Adibekyan and Yann Alibert and Sérgio G. Sousa and Karen A. Collins and Edward M. Bryant and Ares Osborn and David J. Armstrong and Lyu Abe and Jack S. Acton and Brett C. Addison and Karim Agabi and Roi Alonso and Douglas R. Alves and Guillem Anglada-Escudé and Tamas Bárczy and Thomas Barclay and David Barrado and Susana C. C. Barros and Wolfgang Baumjohann and Philippe Bendjoya and Willy Benz and Allyson Bieryla and Xavier Bonfils and François Bouchy and Alexis Brandeker and Christopher Broeg and David J. A. Brown and Matthew R. Burleigh and Marco Buttu and Juan Cabrera and Douglas A. Caldwell and Sarah L. Casewell and David Charbonneau and Sébastian Charnoz and Ryan Cloutier and Andrew Collier Cameron and Kevin I. Collins and Dennis M. Conti and Nicolas Crouzet and Szilárd Czismadia and Melvyn B. Davies and Magali Deleuil and Elisa Delgado-Mena and Laetitia Delrez and Olivier D. S. Demangeon and Brice-Olivier Demory and Georgina Dransfield and Xavier Dumusque and Jo Ann Egger and David Ehrenreich and Philipp Eigmüller and Anders Erickson and Zahra Essack and Andrea Fortier and Luca Fossati and Malcolm Fridlund and Maximilian N. Günther and Manuel Güdel and Davide Gandolfi and Harvey Gillard and Michaël Gillon and Crystal Gnilka and Michael R. Goad and Robert F. Goeke and Tristan Guillot and Andreas Hadjigeorghiou and Coel Hellier and Beth A. Henderson and Kevin Heng and Matthew J. Hooton and Keith Horne and Steve B. Howell and Sergio Hoyer and Jonathan M. Irwin and James S. Jenkins and Jon M. Jenkins and Eric L. N. Jensen and Stephen R. Kane and Alicia Kendall and John F. Kielkopf and Laszlo L. Kiss and Gaia Lacedelli and Jacques Laskar and David W. Latham and Alain Lecavalier des Etangs and Adrien Leleu and Monika Lendl and Jorge Lillo-Box and Christophe Lovis and Djamel Mékarnia and Bob Massey and Tamzin Masters and Pierre F. L. Maxted and Valerio Nascimbeni and Louise D. Nielsen and Sean M. O'Brien and Göran Olofsson and Hugh P. Osborn and Isabella Pagano and Enric Pallé and Carina M. Persson and Giampaolo Piotto and Peter Plavchan and Don Pollacco and Didier Queloz and Roberto Ragazzoni and Heike Rauer and Ignasi Ribas and George Ricker and Damien Ségransan and Sébastien Salmon and Alexandre Santerne and Nuno C. Santos and Gaetano Scandariato and François-Xavier Schmider and Richard P. Schwarz and Sara Seager and Avi Shporer and Attila E. Simon and Alexis M. S. Smith and Gregor Srdoc and Manfred Steller and Olga Suarez and Gyula M. Szabó and Johanna Teske and Nicolas Thomas and Rosanna H. Tilbrook and Amaury H. M. J. Triaud and Stéphane Udry and Valérie Van Grootel and Nicholas Walton and Sharon X. Wang and Peter J. Wheatley and Joshua N. Winn and Robert A. Wittenmyer and Hui Zhang},
journal= {arXiv preprint arXiv:2208.07328},
year = {2023}
}