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Science Extraction from TESS Observations of Known Exoplanet Hosts
Publications of the Astronomical Society of the Pacific ( IF 3.5 ) Pub Date : 2020-12-10 , DOI: 10.1088/1538-3873/abc610
Stephen R. Kane 1 , Jacob L. Bean 2 , Tiago L. Campante 3, 4 , Paul A. Dalba 1 , Tara Fetherolf 1 , Teo Mocnik 5 , Colby Ostberg 1 , Joshua Pepper 6 , Emilie R. Simpson 1 , Margaret C. Turnbull 7 , George R. Ricker 8 , Roland Vanderspek 8 , David W. Latham 9 , Sara Seager 8, 10, 11 , Joshua N. Winn 12 , Jon M. Jenkins 13 , Daniel Huber 14 , William J. Chaplin 15, 16
Affiliation  

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 & 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.

中文翻译:

对已知系外行星宿主的 TESS 观测的科学提取

系外行星发现和表征的凌日方法使系外行星科学取得了许多突破。这些包括测量行星半径、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。凌日系外行星调查卫星(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,增加了系外行星清单。在这里,我们描述了主要任务期间对已知系外行星宿主的 TESS 观测的科学提取。这些包括已知系外行星的凌日探测、发现额外的系外行星、相位特征和二次日食的探测、凌日星历细化、和星震学作为改善恒星和行星参数的一种手段。我们提供了周期 1 和周期 2 期间 TESS 已知宿主观测的统计数据,并提供了几个使用长基线观测到的已知宿主恒星的 TESS 光度测量示例。我们概述了主要任务期间对已知宿主的观察的主要发现。最后,我们描述了在 TESS 扩展任务和预期科学产出期间对已知系外行星宿主进行进一步观察的案例。
更新日期:2020-12-10
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