质量比最低的行星微透镜事件：OGLE 2016-BLG-1195Lb
地球与行星天体物理
2017-06-21 v2
摘要
我们报告了在 OGLE~2016--BLG--1195 事件光变曲线中，通过微透镜方法发现的质量比最低的系外行星。该行星在巡天数据中表现为对微透镜单透镜轮廓的一个微小偏离，在行星信号出现后不久即被检测到。行星信号的持续时间约为 2.5 小时。测得的行星质量与其宿主恒星的质量比为 q = 4.2±0.7×10⁻⁵。我们进一步估计，该透镜系统很可能包含一颗约 3 地球质量的低温行星，位于约 2 AU 宽的轨道上，围绕一颗 0.2 太阳质量的恒星运行，系统整体距离为 7.1 kpc。
引用
@article{arxiv.1703.08639,
title = {The Lowest Mass Ratio Planetary Microlens: OGLE 2016-BLG-1195Lb},
author = {I. A. Bond and D. P. Bennett and T. Sumi and A. Udalski and D. Suzuki and N. J. Rattenbury and V. Bozza and N. Koshimoto and F. Abe and Y. Asakura and R. K. Barry and A. Bhattacharya and M. Donachie and P. Evans and A. Fukui and Y. Hirao and Y. Itow and M. C. A. Li and C. H. Ling and K. Masuda and Y. Matsubara and Y. Muraki and M. Nagakane and K. Ohnishi and C. Ranc and To. Saito and A. Sharan and D. J. Sullivan and P. J. Tristram and T. Yamada and T. Yamada and A. Yonehara and J. Skowron and M. K. Szymanski and R. Poleski and P. Mroz and I. Soszynski and P. Pietrukowicz and S. Kozlowski and K. Ulaczyk and M. Pawlak},
journal= {arXiv preprint arXiv:1703.08639},
year = {2017}
}
备注
8 pages, 5 figures, accepted for publication in MNRAS