A Planetary Companion to the Intermediate-Mass Giant HD 100655
Earth and Planetary Astrophysics
2015-06-03 v1
Abstract
A precise radial velocity survey conducted by a Korean-Japanese planet search program revealed a planetary companion around the intermediate-mass clump giant HD 100655. The radial velocity of the star exhibits a periodic Keplerian variation with a period, semi-amplitude and eccentricity of 157.57 d, 35.2 m s^-1 and 0.085, respectively. Adopting an estimated stellar mass of 2.4 M_Sun, we confirmed the presence of a planetary companion with a semi-major axis of 0.76 AU and a minimum mass of 1.7 M_Jup. The planet is the lowest-mass planet yet discovered around clump giants with masses greater than 1.9 M_Sun.
Keywords
Cite
@article{arxiv.1111.3746,
title = {A Planetary Companion to the Intermediate-Mass Giant HD 100655},
author = {Masashi Omiya and Inwoo Han and Hideyuki Izumiura and Byeong-Cheol Lee and Bun'ei Sato and Kang-Min Kim and Tae Seog Yoon and Eiji Kambe and Michitoshi Yoshida and Seiji Masuda and Eri Toyota and Seitaro Urakawa and Masahide Takada-Hidai},
journal= {arXiv preprint arXiv:1111.3746},
year = {2015}
}
Comments
17 pages, 8 figures, accepted for publication in PASJ