TESS 交出首颗地球大小行星与一颗温暖亚海王星
地球与行星天体物理
2019-04-24 v2 太阳与恒星天体物理
摘要
系外行星科学的未来是光明的，TESS 再次以其迄今确认的周期最长行星的发现证明了这一点。我们在此呈现 HD 21749b（TOI 186.01），一颗绕明亮（V = 8.1）邻近（16 pc）K4.5 矮星在 36 天轨道上运行的亚海王星。TESS 测得 HD 21749b 为 2.61 ，结合档案与后续精密径向速度数据将该行星质量定为 。HD 21749b 有助于 TESS 一级科学要求，即提供 50 颗小于 4 且质量已测的凌星行星。此外，我们报道了 HD 21749c（TOI 186.02）的发现，这是 TESS 的首颗地球大小（）行星。HD 21749 系统是多行星系统中行星组成与架构比较研究的绝佳目标。
引用
@article{arxiv.1901.00051,
title = {TESS delivers its first Earth-sized planet and a warm sub-Neptune},
author = {Diana Dragomir and Johanna Teske and Maximilian N. Gunther and Damien Ségransan and Jennifer A. Burt and Chelsea X. Huang and Andrew Vanderburg and Elisabeth Matthews and Xavier Dumusque and Keivan G. Stassun and Joshua Pepper and George R. Ricker and Roland Vanderspek and David W. Latham and Sara Seager and Joshua N. Winn and Jon M. Jenkins and Thomas Beatty and François Bouchy and Timothy M. Brown and R. Paul Butler and David R. Ciardi and Jeffrey D. Crane and Jason D. Eastman and Luca Fossati and Jim Francis and Benjamin J. Fulton and B. Scott Gaudi and Robert F. Goeke and David James and Todd C. Klaus and Rudolf B. Kuhn and Christophe Lovis and Michael B. Lund and Scott McDermott and Martin Paegert and Francesco Pepe and Joseph E. Rodriguez and Lizhou Sha and Stephen A. Shectman and Avi Shporer and Robert J. Siverd and Aylin Garcia Soto and Daniel J. Stevens and Joseph D. Twicken and Stéphane Udry and Steven Villanueva and Sharon X. Wang and Bill Wohler and Xinyu Yao and Zhuchang Zhan},
journal= {arXiv preprint arXiv:1901.00051},
year = {2019}
}
备注
Published in ApJ Letters; 5 figures, 1 table