GJ 238 b：轨道于一颗M2.5型恒星上以15.2 pc处的0.57 Earth半径行星
地球与行星天体物理
2024-07-26 v1
摘要
我们报告发现的穿越行星GJ 238 b，半径为 R（约为火星半径的 倍），轨道周期为1.74天。该穿越信号被TESS任务检测并指定为TOI-486.01。由于主机星靠近南天盒座极，TESS在观察南天天空时几乎可以连续观测。主机星为M2.5型恒星， mag， mag，距离为 pc，质量为 M，半径为 R，有效温度为 K。通过排除或使每种虚假阳性情形几乎不可能，基于档案数据和地面跟踪观测来验证行星候选者。由于主机星的小尺寸和高适赤速度（ mas yr），验证工作得以进行。
引用
@article{arxiv.2407.18199,
title = {GJ 238 b: A 0.57 Earth Radius Planet Orbiting an M2.5 Dwarf Star at 15.2 pc},
author = {Evan Tey and Avi Shporer and Zifan Lin and Keivan G. Stassun and Jack J. Lissauer and Coel Hellier and Karen A. Collins and Kevin I. Collins and Geof Wingham and Howard M. Relles and Franco Mallia and Giovanni Isopi and John F. Kielkopf and Dennis M. Conti and Richard P. Schwarz and Aldo Zapparata and Steven Giacalone and Elise Furlan and Zachary D. Hartman and Steve B. Howell and Nicholas J. Scott and Carl Ziegler and Cesar Briceno and Nicholas Law and Andrew W. Mann and David Charbonneau and Zahra Essack and Stephanie Striegel and George R. Ricker and Roland Vanderspek and Sara Seager and Joshua N. Winn and Jon M. Jenkins},
journal= {arXiv preprint arXiv:2407.18199},
year = {2024}
}
备注
Published in AJ