TOI-677 b：一颗在偏心轨道上凌食晚F型恒星的温木星(P=11.2天)
地球与行星天体物理
2020-03-18 v1 太阳与恒星天体物理
摘要
我们报告TOI-677 b的发现，它最初在凌星系外行星巡天卫星(TESS)任务第9和第10扇区获得的光变曲线中作为候选体被识别，并经视向速度确认。TOI-677 b的质量为M_p = 1.236 M_J，半径为R_p = 1.170 ± 0.03 R_J，并以偏心率e = 0.435 ± 0.024的偏心轨道绕其明亮宿主恒星(V=9.8 mag)运行，轨道周期为11.23660 ± 0.00011 d。宿主恒星质量为M_* = 1.181 ± 0.058 M_sun，半径为R_* = 1.28 ± 0.03 R_sun，年龄为2.92 Gyr且为太阳金属丰度，这些性质与T_eff = 6295 ± 77 K的主序晚F型恒星一致。我们在视向速度测量中发现一个次级长期信号的证据，可能源于外侧伴星。TOI-677 b系统是用于Rossiter-Mclaughlin观测以约束近距巨行星迁移机制的合适目标。
引用
@article{arxiv.1911.05574,
title = {TOI-677 b: A Warm Jupiter (P=11.2d) on an eccentric orbit transiting a late F-type star},
author = {Andrés Jordán and Rafael Brahm and Néstor Espinoza and Thomas Henning and Matías I. Jones and Diana Kossakowski and Paula Sarkis and Trifon Trifonov and Felipe Rojas and Pascal Torres and Holger Drass and Sangeetha Nandakumar and Mauro Barbieri and Allen Davis and Songhu Wang and Daniel Bayliss and Luke Bouma and Diana Dragomir and Jason D. Eastman and Tansu Daylan and Natalia Guerrero and Thomas Barclay and Eric B. Ting and Christopher E. Henze and George Ricker and Roland Vanderspek and David W. Latham and Sara Seager and Joshua Winn and Jon M. Jenkins and Robert A. Wittenmyer and Brendan P. Bowler and Ian Crossfield and Jonathan Horner and Stephen R. Kane and John F. Kielkopf and Timothy D. Morton and Peter Plavchan and C. G. Tinney and Brett Addison and Matthew W. Mengel and Jack Okumura and Sahar Shahaf and Tsevi Mazeh and Markus Rabus and Avi Shporer and Carl Ziegler and Andrew W. Mann and Rhodes Hart},
journal= {arXiv preprint arXiv:1911.05574},
year = {2020}
}
备注
Submitted to AAS journals, 15 pages, 8 figures