宜居带内一颗围绕冷恒星运行的地球大小行星
地球与行星天体物理
2014-04-24 v1
摘要
寻找类地行星是当前系外行星研究的主要焦点。虽然已探测到地球大小及更小的行星，但这些行星的轨道距离其宿主恒星过近，无法在其表面存在液态水。我们报告了 Kepler-186f 的探测结果，这是一颗半径为 地球半径的行星，它是环绕一颗 恒星运行的五颗行星中最外侧的一颗，这五颗行星的大小均大致与地球相当。该恒星辐射的强度和光谱将 Kepler-186f 置于恒星宜居带内，这意味着如果 Kepler-186f 拥有类地大气且表面存在 H2O，那么其中部分 H2O 很可能呈液态。
引用
@article{arxiv.1404.5667,
title = {An Earth-sized Planet in the Habitable Zone of a Cool Star},
author = {Elisa V. Quintana and Thomas Barclay and Sean N. Raymond and Jason F. Rowe and Emeline Bolmont and Douglas A. Caldwell and Steve B. Howell and Stephen R. Kane and Daniel Huber and Justin R. Crepp and Jack J. Lissauer and David R. Ciardi and Jeffrey L. Coughlin and Mark E. Everett and Christopher E. Henze and Elliott Horch and Howard Isaacson and Eric B. Ford and Fred C. Adams and Martin Still and Roger C. Hunter and Billy Quarles and Franck Selsis},
journal= {arXiv preprint arXiv:1404.5667},
year = {2014}
}
备注
Main text and supplemental material combined. This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on 18 April 2014, Vol. 344, #6181. Published version available from http://www.sciencemag.org/content/344/6181/277