文章基本信息

标题：An Eccentric Massive Jupiter Orbiting a Subgiant on a 9.5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images
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作者：Joseph E. Rodriguez ; Samuel N. Quinn ; Chelsea X. Huang 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2019
卷号：157
期号：5
页码：1-13
DOI：10.3847/1538-3881/ab11d9
语种：English
出版社：American Institute of Physics
摘要：We report the discovery of TOI-172 b from the Transiting Exoplanet Survey Satellite (TESS) mission, a massive hot Jupiter transiting a slightly evolved G star with a 9.48-day orbital period. This is the first planet to be confirmed from analysis of only the TESS full frame images, because the host star was not chosen as a two-minute cadence target. From a global analysis of the TESS photometry and follow-up observations carried out by the TESS Follow- up Observing Program Working Group, TOI-172 (TIC 29857954) is a slightly evolved star with an effective temperature of T eff =5645±50K, a mass of M å = 1.128 0.061 0.065- +M e , radius of R å = 1.777 0.044 0.047-+R e , a surfacegravity of log g å = 3.993 0.0280.027-+, and an age of 7.4 Gyr1.51.6-+. Its planetary companion (TOI-172 b) has a radius ofR P = 0.9650.0290.032-+R J , a mass of M P = 5.420.200.22-+M J , and is on an eccentric orbit ( e 0.38060.00900.0093=-+). TOI-172 b is one of the few known massive giant planets on a highly eccentric short-period orbit. Future study of the atmosphere of this planet and its system architecture offer opportunities to understand the formation and evolution of similar systems.
关键词：planetary systems;planets and satellites: detection;stars: individual (TIC 29857954) Supporting material: data behind figure, machine-readable table