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arXiv 1708.02541astro-ph.SR
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SEEDS巡天中FGK星的基本恒星参数

The Fundamental Stellar Parameters of FGK Stars in the SEEDS Survey

Evan A. Rich, John P. Wisniewski, Michael W. McElwain, Jun Hashimoto, Tomoyuki Kudo, Nobuhiko Kusakabe, Yoshiko K. Okamoto, Lyu Abe, Eiji Akiyama, Wolfgang Bran… 展开作者

Evan A. Rich, John P. Wisniewski, Michael W. McElwain, Jun Hashimoto, Tomoyuki Kudo, Nobuhiko Kusakabe, Yoshiko K. Okamoto, Lyu Abe, Eiji Akiyama, Wolfgang Brandner, Timothy D. Brandt, Phillip Cargile, Joseph C. Carson, Thayne M Currie, Sebastian Egner, Markus Feldt, Misato Fukagawa, Miwa Goto, Carol A. Grady, Olivier Guyon, Yutaka Hayano, Masahiko Hayashi, Saeko S. Hayashi, Leslie Hebb, Krzysztof G. Helminiak, Thomas Henning, Klaus W. Hodapp, Miki Ishii, Masanori Iye, Markus Janson, Ryo Kandori, Gillian R. Knapp, Masayuki Kuzuhara, Jungmi Kwon, Taro Matsuo, Satoshi Mayama, Shoken Miyama, Munetake Momose, Jun-Ichi Morino, Amaya Moro-Martin, Takao Nakagawa, Tetsuo Nishimura, Daehyeon Oh, Tae-Soo Pyo, Joshua Schlieder, Eugene Serabyn, Michael L. Sitko, Takuya Suenaga, Hiroshi Suto, Ryuji Suzuki, Yasuhiro H. Takahashi, Michihiro Takami, Naruhisa Takato, Hiroshi Terada, Christian Thalmann, Daigo Tomono, Edwin L. Turner, Makoto Watanabe, Toru Yamada, Hideki Takami, Tomonori Usuda, Motohide Tamura

摘要:

迄今为止,大型系外行星调查已经成功探测到数千颗系外行星。利用这些探测和未探测来限制我们对行星系统形成和演化的理解,还需要对它们的宿主恒星的基本性质有详细的了解。我们已经确定了基本的恒星性质的F,K和G星的战略探索系外行星和斯巴鲁(SEEDS)的调查,从阶梯光谱在阿帕奇点天文台的3.5米望远镜。利用ROBOSPECT提取谱线等效宽度,TGVIT计算基本参数,计算了样品的Teff、log(g)、vt、[Fe/H]、色球活动性和年龄。我们的方法是根据以前公布的结果进行校准,我们的样本的一部分。[Fe/H]在我们的样品中的分布与太阳附近的典型分布一致。此外,我们发现我们的大部分样本的年龄是$< 500 Myrs$,但注意,我们不能确定强大的年龄显着老恒星通过色球活动年龄指标。未来的荟萃分析广泛的恒星和亚恒星同伴通过种子调查成像的频率将利用我们的研究结果,以限制检测到的共同移动的同伴与其宿主恒星的属性的发生。

英文摘要:

Large exoplanet surveys have successfully detected thousands of exoplanets to-date. Utilizing these detections and non-detections to constrain our understanding of the formation and evolution of planetary systems also requires a detailed understanding of the basic properties of their host stars. We have determined the basic stellar properties of F, K, and G stars in the Strategic Exploration of Exoplanets and Disks with Subaru (SEEDS) survey from echelle spectra taken at the Apache Point Observatory's 3.5m telescope. Using ROBOSPECT to extract line equivalent widths and TGVIT to calculate the fundamental parameters, we have computed Teff, log(g), vt, [Fe/H], chromospheric activity, and the age for our sample. Our methodology was calibrated against previously published results for a portion of our sample. The distribution of [Fe/H] in our sample is consistent with that typical of the Solar neighborhood. Additionally, we find the ages of most of our sample are $< 500 Myrs$, but note that we cannot determine robust ages from significantly older stars via chromospheric activity age indicators. The future meta-analysis of the frequency of wide stellar and sub-stellar companions imaged via the SEEDS survey will utilize our results to constrain the occurrence of detected co-moving companions with the properties of their host stars.

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