Bibliographic Details
| Title: |
A Long-period Eccentric Substellar Companion to the Evovled Intermediate-Mass Star HD 14067 |
| Authors: |
Wang, Liang, Sato, Bunei, Omiya, Masashi, Harakawa, Hiroki, Liu, Yujuan, Song, Nan, He, Wei, Wu, Xiaoshu, Izumiura, Hideyuki, Kambe, Eiji, Takeda, Yoichi, Yoshida, Michitoshi, Itoh, Yoichi, Ando, Hiroyasu, Kokubo, Eiichiro, Ida, Shigeru, Zhao, Gang |
| Publication Year: |
2014 |
| Collection: |
Astrophysics |
| Subject Terms: |
Astrophysics - Solar and Stellar Astrophysics |
| More Details: |
We report the detection of a substellar companion orbiting an evolved intermediate-mass ($M_\star=2.4\,M_\odot$) star HD 14067 (G9 III) using precise Doppler technique. Radial velocities of this star can be well fitted either by a periodic Keplerian variation with a decreasing linear velocity trend (P=1455 days, $K_1=92.2$ m s$^{-1}$, $e=0.533$, and $\dot{\gamma}=-22.4$ m s$^{-1}$ yr$^{-1}$) or a single Keplerian orbit without linear trend (P=2850 days, $K_1=100.1$ m s$^{-1}$, and $e=0.697$). The minimum mass ($m_2\sin{i}=7.8\,M_{\rm J}$ for the model with a linear trend, or $m_2\sin{i}=9.0\,M_{\rm J}$ for the model without a linear trend) suggests a long-period giant planet around an evolved intermediate-mass star. The eccentricity of the orbit is among the highest known for planets ever detected around evolved stars.
Comment: 22 pages, 8 figures, accepted for publication in PASJ |
| Document Type: |
Working Paper |
| DOI: |
10.1093/pasj/psu113 |
| Access URL: |
http://arxiv.org/abs/1409.6081 |
| Accession Number: |
edsarx.1409.6081 |
| Database: |
arXiv |
