Science Extraction from TESS Observations of Known Exoplanet Hosts
Science Extraction from TESS Observations of Known Exoplanet Hosts
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DOI：
10.1088/1538-3873/abc610
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发表时间：
2020-10
影响因子：
3.5
通讯作者：
S. Kane;J. Bean;T. Campante;P. Dalba;T. Fetherolf;T. Močnik;C. Ostberg;J. Pepper;Emilie R. Simpson;M. Turnbull;G. Ricker;R. Vanderspek;D. Latham;S. Seager;J. Winn;J. Jenkins;D. Huber;W. Chaplin
中科院分区：
文献类型：
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作者：
S. Kane;J. Bean;T. Campante;P. Dalba;T. Fetherolf;T. Močnik;C. Ostberg;J. Pepper;Emilie R. Simpson;M. Turnbull;G. Ricker;R. Vanderspek;D. Latham;S. Seager;J. Winn;J. Jenkins;D. Huber;W. Chaplin
系外行星的发现和表征的凌日方法使系外行星科学取得了许多突破。这些包括行星半径的测量、质量半径关系、恒星倾角、内部模型的体积密度限制以及作为研究行星大气的手段的透射光谱。凌日系外行星勘测卫星（TESS）通过观测天球的很大一部分，包括许多已知拥有系外行星的恒星，增加了系外行星的清单。在这里，我们描述了在主要任务期间从 TESS 对已知系外行星宿主的观测中提取的科学内容。这些包括已知系外行星的凌日探测、其他系外行星的发现、相位特征和二次日食的检测、凌日星历细化以及作为改善恒星和行星参数的手段的星震学。我们提供了第 1 周期和第 2 周期期间 TESS 已知宿主观测的统计数据，并提供了用长基线观测的已知宿主恒星的 TESS 光度测量的几个示例。我们概述了主要任务期间对已知宿主进行观察的主要发现。最后，我们描述了在 TESS 扩展任务期间对已知系外行星宿主进行进一步观测的情况以及预期的科学成果。
The transit method of exoplanet discovery and characterization has enabled numerous breakthroughs in exoplanetary science. These include measurements of planetary radii, mass–radius relationships, stellar obliquities, bulk density constraints on interior models, and transmission spectroscopy as a means to study planetary atmospheres. The Transiting Exoplanet Survey Satellite (TESS) has added to the exoplanet inventory by observing a significant fraction of the celestial sphere, including many stars already known to host exoplanets. Here we describe the science extraction from TESS observations of known exoplanet hosts during the primary mission. These include transit detection of known exoplanets, discovery of additional exoplanets, detection of phase signatures and secondary eclipses, transit ephemeris refinement, and asteroseismology as a means to improve stellar and planetary parameters. We provide the statistics of TESS known host observations during Cycle 1 and 2, and present several examples of TESS photometry for known host stars observed with a long baseline. We outline the major discoveries from observations of known hosts during the primary mission. Finally, we describe the case for further observations of known exoplanet hosts during the TESS extended mission and the expected science yield.