SEEDS 巡天中 FGK 恒星的基本恒星参数
太阳与恒星天体物理
2017-09-20 v1
摘要
大型系外行星巡天迄今为止已成功探测到数千颗系外行星。利用这些探测与非探测结果来约束我们对行星系统形成和演化的理解，还需要对其宿主恒星的基本性质有详细的了解。我们利用在 Apache Point 天文台 3.5m 望远镜上获取的阶梯光栅光谱，确定了 Subaru 系外行星和盘的战略探索（SEEDS）巡天中 F、K 和 G 型恒星的基本恒星性质。使用 ROBOSPECT 提取谱线等值宽度并使用 TGVIT 计算基本参数，我们计算了样本的 Teff、log(g)、vt、[Fe/H]、色球活动以及年龄。我们的方法通过样本中部分恒星已发表的结果进行了校准。我们样本中 [Fe/H] 的分布与太阳系邻近区域的典型分布一致。此外，我们发现样本中大多数恒星的年龄 ，但指出我们无法通过色球活动年龄指标确定显著更老恒星的可靠年龄。未来对 SEEDS 巡天成像到的宽距恒星和亚恒星伴星频率的荟萃分析，将利用我们的结果来约束探测到的共自行伴星出现率与其宿主恒星性质之间的关系。
引用
@article{arxiv.1708.02541,
title = {The Fundamental Stellar Parameters of FGK Stars in the SEEDS Survey},
author = {Evan A. Rich and John P. Wisniewski and Michael W. McElwain and Jun Hashimoto and Tomoyuki Kudo and Nobuhiko Kusakabe and Yoshiko K. Okamoto and Lyu Abe and Eiji Akiyama and Wolfgang Brandner and Timothy D. Brandt and Phillip Cargile and Joseph C. Carson and Thayne M Currie and Sebastian Egner and Markus Feldt and Misato Fukagawa and Miwa Goto and Carol A. Grady and Olivier Guyon and Yutaka Hayano and Masahiko Hayashi and Saeko S. Hayashi and Leslie Hebb and Krzysztof G. Helminiak and Thomas Henning and Klaus W. Hodapp and Miki Ishii and Masanori Iye and Markus Janson and Ryo Kandori and Gillian R. Knapp and Masayuki Kuzuhara and Jungmi Kwon and Taro Matsuo and Satoshi Mayama and Shoken Miyama and Munetake Momose and Jun-Ichi Morino and Amaya Moro-Martin and Takao Nakagawa and Tetsuo Nishimura and Daehyeon Oh and Tae-Soo Pyo and Joshua Schlieder and Eugene Serabyn and Michael L. Sitko and Takuya Suenaga and Hiroshi Suto and Ryuji Suzuki and Yasuhiro H. Takahashi and Michihiro Takami and Naruhisa Takato and Hiroshi Terada and Christian Thalmann and Daigo Tomono and Edwin L. Turner and Makoto Watanabe and Toru Yamada and Hideki Takami and Tomonori Usuda and Motohide Tamura},
journal= {arXiv preprint arXiv:1708.02541},
year = {2017}
}
备注
22 Pages, 10 Figures, 5 Tables. Published in MNRAS