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Doppler confirmation of <i>TESS</i> planet candidate TOI−1408.01: grazing transit and likely eccentric orbitстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Galazutdinov G.A., Baluev R.V., Valyavin G., Aitov V., Gadelshin D., Valeev A., Sendzikas E., Sokov E., Mitiani G., Burlakova T., Yakunin I., Antonyuk K.A., Vlasyuk V., Romanyuk I., Rzaev A., Yushkin M., Ivanova A., Tavrov A., Korablev O.
- Журнал: Monthly Notices of the Royal Astronomical Society
- Том: 526
- Номер: 1
- Год издания: 2023
- Издательство: Oxford Journals, Oxford University Press
- Местоположение издательства: Oxford, UK, England
- Первая страница: L111
- Последняя страница: L115
- DOI: 10.1093/mnrasl/slad127
- Аннотация: We report an independent Doppler confirmation of the TESS planet candidate orbiting an F-type main-sequence star TOI-1408 located 140 pc away. We present a set of radial velocities obtained with a high-resolution fibre-optic spectrograph FFOREST mounted at the SAO RAS 6-m telescope (BTA-6). Our self-consistent analysis of these Doppler data and TESS photometry suggests a grazing transit such that the planet obscures its host star by only a portion of the visible disc. Because of this degeneracy, the radius of TOI-1408.01 appears ill-determined with lower limit about ~1 RJup, significantly larger than in the current TESS solution. We also derive the planet mass of 1.69 ± 0.20 MJup and the orbital period ~4.425 d, thus making this object a typical hot Jupiter, but with a significant orbital eccentricity of 0.259 ± 0.026. Our solution may suggest that the planet is likely to experience a high tidal eccentricity migration at the stage of intense orbital rounding, or may indicate possible presence of other unseen companions in the system, yet to be detected.
- Добавил в систему: Богомазов Алексей Иванович