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标题：HD 2685 b: a hot Jupiter orbiting an early F-type star detected by TESS ★
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作者：Matías I. Jones ; Rafael Brahm ; Nestor Espinoza 等
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2019
卷号：625
DOI：10.1051/0004-6361/201834640
语种：English
出版社：EDP Sciences
摘要：We report on the confirmation of a transiting giant planet around the relatively hot (Teff= 6801 ± 76 K) star HD 2685, whose transit signal was detected in Sector 1 data of NASA’s TESS mission. We confirmed the planetary nature of the transit signal using Doppler velocimetric measurements with CHIRON, CORALIE, and FEROS, as well as using photometric data obtained with the Chilean-Hungarian Automated Telescope and the Las Cumbres Observatory. From the joint analysis of photometry and radial velocities, we derived the following parameters for HD 2685b:P= 4.12688−0.00004+0.00005days,e= 0.091−0.047+0.039,MP= 1.17 ± 0.12MJ, andRP=1.44 ± 0.05RJ. This system is a typical example of an inflated transiting hot Jupiter in a low-eccentricity orbit. Based on the apparent visual magnitude (V= 9.6 mag) of the host star, this is one of the brightest known stars hosting a transitinghot Jupiter, and it is a good example of the upcoming systems that will be detected by TESS during the two-year primary mission. This is also an excellent target for future ground- and space-based atmospheric characterization as well as a good candidate for measuring the projected spin-orbit misalignment angle through the Rossiter–McLaughlin effect.
关键词：Key wordsentechniques: radial velocitiesplanets and satellites: detectioninstrumentation: spectrographsplanetary systemsmethods: observational