We report the discovery of a substellar companion around the intermediatemass giant HD 175679. Precise radial velocity data of the star from Xinglong Station and Okayama Astrophysical Observatory (OAO) revealed a Keplerian velocity variation with an orbital period of 1366.8 \pm 5.7 days, a semiamplitude of 380.2 \pm 3.2m s.1, and an eccentricity of 0.378 \pm 0.008. Adopting a stellar mass of 2.7 \pm 0.3 M\odot, we obtain the minimum mass of the HD 175679 b is 37.3 \pm 2.8 MJ, and the semimajor axis is 3.36 \pm 0.12 AU. This discovery is the second brown dwarf companion candidate from a joint planet-search program between China and Japan.
@article{arxiv.1110.0559,
title = {A Possible Substellar Companion to the Intermediate-mass Giant HD 175679},
author = {Liang Wang and Bun'ei Sato and Gang Zhao and Yujuan Liu and Kunio Noguchi and Hiroyasu Ando and Hideyuki Izumiura and Eiji Kambe and Masashi Omiya and Hiroki Harakawa and Fan Liu and Xiaoshu Wu and Yoichi Takeda and Michitoshi Yoshida and Eiichiro Kokubo},
journal= {arXiv preprint arXiv:1110.0559},
year = {2015}
}