TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images
TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images
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DOI：
10.3847/1538-3881/abe38a
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发表时间：
2021-01
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通讯作者：
Joseph E. Rodriguez;S. Quinn;G. Zhou;A. Vanderburg;L. Nielsen;R. Wittenmyer;R. Brahm;P. Reed
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作者：
Joseph E. Rodriguez;S. Quinn;G. Zhou;A. Vanderburg;L. Nielsen;R. Wittenmyer;R. Brahm;P. Reed
基于美国宇航局凌日系外行星测量卫星（TESS）的数据，我们发现了五颗热木星和暖木星——toi -628 b （TIC 281408474; HD 288842）、TOI-640 b （TIC 147977348）、TOI-1333 b （TIC 395171208, BD+47 3521A）、TOI-1478 b （TIC 409794137）和TOI-1601 b （TIC 139375960）。这五颗行星是从全画幅图像中识别出来的，并通过TESS后续观测计划工作组的一系列光度和光谱后续观测得到了证实。这些行星都是类木大小（R P = 1.01-1.77 R J），质量范围在0.85到6.33 M J之间。这些系统的宿主恒星具有F和G光谱型（5595≤T eff≤6460 K），都相对明亮（9.5 1.7 R J，可能是其宿主恒星演化的结果），并且运行在周期超过5天的轨道上。TOI-628 b是迄今为止TESS发现的质量最大的热木星，其测量质量为mj，具有统计意义的非零轨道偏心率e =。从我们的分析来看，这颗行星没有足够的时间通过潮汐力进行圆周运动，这表明它可能是它迁移时的偏心残余。该样本中周期最长的行星TOI-1478 b （P = 10.18天）是一颗温暖的木星，绕着一颗近太阳的类似物运行圆形轨道。美国宇航局的TESS任务正在继续增加具有良好特征的热木星和温暖木星的样本，以补充其主要任务目标。
We present the discovery and characterization of five hot and warm Jupiters—TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b (TIC 409794137), and TOI-1601 b (TIC 139375960)—based on data from NASA’s Transiting Exoplanet Survey Satellite (TESS). The five planets were identified from the full-frame images and were confirmed through a series of photometric and spectroscopic follow-up observations by the TESS Follow-up Observing Program Working Group. The planets are all Jovian size (R P = 1.01–1.77 R J) and have masses that range from 0.85 to 6.33 M J. The host stars of these systems have F and G spectral types (5595 ≤ T eff ≤ 6460 K) and are all relatively bright (9.5 1.7 R J, possibly a result of its host star’s evolution) and resides on an orbit with a period longer than 5 days. TOI-628 b is the most massive, hot Jupiter discovered to date by TESS with a measured mass of M J and a statistically significant, nonzero orbital eccentricity of e = . This planet would not have had enough time to circularize through tidal forces from our analysis, suggesting that it might be remnant eccentricity from its migration. The longest-period planet in this sample, TOI-1478 b (P = 10.18 days), is a warm Jupiter in a circular orbit around a near-solar analog. NASA’s TESS mission is continuing to increase the sample of well-characterized hot and warm Jupiters, complementing its primary mission goals.