A Planetary Companion to the Intermediate-Mass Giant HD 100655

作者：Omiya Masashi^*; Han Inwoo; Izumiura Hideyuki; Lee Byeong Cheol; Sato Bun' ei; Kim Kang Min; Yoon Tae Seog; Kambe Eiji; Yoshida Michitoshi; Masuda Seiji; Toyota Eri; Urakawa Seitaro; Takada Hidai Masahide

来源：Publications of the Astronomical Society of Japan, 2012, 64(2): 341-348.

DOI：10.1093/pasj/64.2.34

• stars: individual (HD 100655)
• stars: planetary systems
• techniques: radial velocities

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-circle dot, 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-J. The planet is the lowest-mass planet yet discovered around clump giants with masses greater than 1.9 M-circle dot.

• 出版日期2012-4-25
• 单位中国科学院国家天文台