Substellar objects around the sdB eclipsing Binaries

11th Pacific Rim Conference on Stellar Astrophysics: Physics and Chemistry of the Late Stages of Stellar Evolution

物理学;天文学

Zhu, Liying^1,2,3 ; Qian, Shengbang^1,2,3 ; Liao, Wenping^1,2 ; Zhao, Ergang^1,2,3 ; Li, Linjia^1,2

Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, Kunming

650011, China^1

Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, Kunming

650011, China^2

University of the Chinese Academy of Sciences, Yuquan Road 19#, Beijing

100049, China^3

关键词: Brown dwarfs;    Eclipsing binaries;    Exoplanet;    Low mass;    Short periods;    Substellar objects;    Time effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/728/7/072023/pdf
DOI  :  10.1088/1742-6596/728/7/072023

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The sdB-type eclipsing binary consists a very hot subdwarf B (sdB) type primary and a low mass secondary with short period. They are detached binaries and show very narrow eclipse profiles, which benefits the determination of the precise eclipse times. With the precise times of light minimum, we can detected small mass objects around them by analyzing the observed-calculated (O-C) curve based on the light time effect. For searching the substellar objects orbiting around the binaries, we have monitored sdB-type eclipsing binaries for decades. A group of brown dwarfs and planets have been detected since then. In the present paper, we focus on the target NSVS07826147, which may be another exoplanet host candidate among the group of the sdB-type eclipsing binaries.