Substellar Companions to Evolved Intermediate-Mass Stars: HD 145457 and HD 180314

@article{Sato2010SubstellarCT,
  title={Substellar Companions to Evolved Intermediate-Mass Stars: HD 145457 and HD 180314},
  author={Bun’ei Sato and Masashi Omiya and Yujuan Liu and Hiroki Harakawa and Hideyuki Izumiura and Eiji Kambe and Eri Toyota and Daisuke Murata and Byeong-Cheol Lee and Seiji Masuda and Yoichi Takeda and Michitoshi Yoshida and Yoichi Itoh and Hiroyasu Ando and Eiichiro Kokubo and Shigeru Ida and Gang Zhao and Inwoo Han},
  journal={Publications of the Astronomical Society of Japan},
  year={2010},
  volume={62},
  pages={1063-1069}
}
  • B. Sato, M. Omiya, I. Han
  • Published 17 May 2010
  • Physics, Geology
  • Publications of the Astronomical Society of Japan
We report on the detection of two substellar companions orbiting around evolved intermediate-mass stars by precise Doppler measurements at Subaru Telescope and Okayama Astrophysical Observatory. HD 145457 is a K0 giant with a mass of 1.9 Mˇ, and has a planet of minimum mass, m2 sin i = 2.9 MJ, orbiting with a period of P = 176 d and eccentricity of e = 0:11. HD 180314 is also a K0 giant with 2.6Mˇ, and hosts a substellar companion of m2 sin i = 22 MJ, which falls in the brown-dwarf mass regime… 

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