行星猎人TESS V：一颗围绕二星系统的行星系统，包含居住区内的小海王星
地球与行星天体物理
2024-05-01 v1
摘要
我们报告发现并验证了一颗遮行星行星，围绕一颗亮度为V = 9.0 mag的G型恒星(TOI 4633; R = 1.05 RSun, M = 1.10 MSun)。该行星由行星猎人TESS项目中的公民科学家在数据中识别。对遮行星事件建模后，得出轨道周期为271.9445 +/- 0.0040天，行星半径为3.2 +/- 0.20 REarth。该行星的类地轨道周期及其入射通量为1.56 +/- 0.2，使其位于该星系的乐观居住区内。对该系统进行的多光谱测绘允许我们对遮行星行星施加质量上限，并揭示该系统中另一颗非遮行星行星候选星，轨道周期为34.15 +/- 0.15天。此外，结合回溯至1905年的档案数据与新的高角分辨成像，发现该主星系中存在一颗轨道周期约为230年、偏心率约为0.9的星际伴星。该遮行星行星的长周期，结合伴星的高偏心率和近日点接近，使其成为测试行星在二星系统中形成与稳定性的宝贵系统。
引用
@article{arxiv.2404.18997,
title = {Planet Hunters TESS V: a planetary system around a binary star, including a mini-Neptune in the habitable zone},
author = {Nora L. Eisner and Samuel K. Grunblatt and Oscar Barragán and Thea H. Faridani and Chris Lintott and Suzanne Aigrain and Cole Johnston and Ian R. Mason and Keivan G. Stassun and Megan Bedell and Andrew W. Boyle and David R. Ciardi and Catherine A. Clark and Guillaume Hebrard and David W. Hogg and Steve B. Howell and Baptiste Klein and Joe Llama and Joshua N. Winn and Lily L. Zhao and Joseph M. Akana Murphy and Corey Beard and Casey L. Brinkman and Ashley Chontos and Pia Cortes-Zuleta and Xavier Delfosse and Steven Giacalone and Emily A. Gilbert and Neda Heidari and Rae Holcomb and Jon M. Jenkins and Flavien Kiefer and Jack Lubin and Eder Martioli and Alex S. Polanski and Nicholas Saunders and Sara Seager and Avi Shporer and Dakotah Tyler and Judah Van Zandt and Safaa Alhassan and Daval J. Amratlal and Lais I. Antonel and Simon L. S. Bentzen and Milton K. D. Bosch and David Bundy and Itayi Chitsiga and Jérôme F. Delaunay and Xavier Doisy and Richard Ferstenou and Mark Fynø and James M. Geary and Gerry Haynaly and Pete Hermes and Marc Huten and Sam Lee and Paul Metcalfe and Garry J. Pennell and Joanna Puszkarska and Thomas Schäfer and Lisa Stiller and Christopher Tanner and Allan Tarr and Andrew Wilkinson},
journal= {arXiv preprint arXiv:2404.18997},
year = {2024}
}
备注
24 pages, 16 figures, 4 tables