TESS 发现的亚海王星系统中的近共振现象
地球与行星天体物理
2019-10-16 v1
摘要
我们报告了凌星系外行星巡天卫星（）对围绕 的 K0 型矮星 TOI 125 运行的多行星系统的探测。我们发现了多达五颗行星的证据，其置信度各不相同。三个高信噪比的凌星信号对应于亚海王星大小的行星（、 和 ），并且我们从统计学上验证了两颗内侧行星的行星性质（ 天， 天）。由于仅观测到两次凌星，我们将外侧天体（ 天）报告为高信噪比行星候选体。我们还探测到一颗候选的凌星超级地球（），其轨道周期仅为 小时，以及一颗候选的海王星大小行星（），周期为 天，两者信噪比均较低。该系统适于通过视向速度和凌星时间变化确定质量，并提供了在控制年龄和环境条件下研究相似大小行星的机会。TOI 125 b 与 c 的轨道周期之比（）略小于精确的 2:1 通约比，并且不同于来自 的多行星系统，后者表现出偏好于略大于一阶周期比的周期比。动力学分析通过稳定性论证细化了允许的参量空间，并表明尽管周期近乎通约，该系统不太可能处于共振中。
引用
@article{arxiv.1901.09092,
title = {Near-resonance in a system of sub-Neptunes from TESS},
author = {Samuel N. Quinn and Juliette C. Becker and Joseph E. Rodriguez and Sam Hadden and Chelsea X. Huang and Timothy D. Morton and Fred Adams and David Armstrong and Jason D. Eastman and Jonathan Horner and Stephen R. Kane and Jack J. Lissauer and Joseph D. Twicken and Andrew Vanderburg and Rob Wittenmyer and George R. Ricker and Roland K. Vanderspek and David W. Latham and Sara Seager and Joshua N. Winn and Jon M. Jenkins and Eric Agol and Khalid Barkaoui and Charles A. Beichman and François Bouchy and L. G. Bouma and Artem Burdanov and Jennifer Campbell and Roberto Carlino and Scott M. Cartwright and David Charbonneau and Jessie L. Christiansen and David Ciardi and Karen A. Collins and Kevin I. Collins and Dennis M. Conti and Ian J. M. Crossfield and Tansu Daylan and Jason Dittmann and John Doty and Diana Dragomir and Elsa Ducrot and Michael Gillon and Ana Glidden and Robert F. Goeke and Erica J. Gonzales and Krzysztof G. Hełminiak and Elliott P. Horch and Steve B. Howell and Emmanuel Jehin and Eric L. N. Jensen and John F. Kielkopf and Martti H. Kristiansen and Nicholas Law and Andrew W. Mann and Maxime Marmier and Rachel A. Matson and Elisabeth Matthews and Tsevi Mazeh and Mayuko Mori and Felipe Murgas and Catriona Murray and Norio Narita and Louise D. Nielsen and Gaël Ottoni and Enric Palle and Rafał Pawłaszek and Francesco Pepe and Jerome Pitogo de Leon and Francisco J. Pozuelos and Howard M. Relles and Joshua E. Schlieder and Daniel Sebastian and Damien Ségransan and Avi Shporer and Keivan G. Stassun and Motohide Tamura and Andrei Tokovinin and Stéphane Udry and Ian Waite and Carl Ziegler},
journal= {arXiv preprint arXiv:1901.09092},
year = {2019}
}
备注
Submitted to AAS Journals. 20 pages, 10 figures, 5 tables