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25 April 2024

» arxiv » 1811.5518

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HD2685 b: A Hot-Jupiter orbiting an early F-type star detected by TESS
M. I. Jones ; R. Brahm ; N. Espinoza ; S. Wang ; A. Shporer ; T. Henning ; A. Jordan ; P. Sarkis ; L. A. Paredes ; J. Hodari-Sadiki ; T. Henry ; B. Cruz ; L. D. Nielsen ; F. Bouchy ; F. Pepe ; D. Segransan ; O. Turner ; S. Udry ; G. Bakos ; D. Osip ; V. Suc ; C. Ziegler ; A. Tokovinin ; N. M. Law ; A. W. Mann ; H. Relles ; K. A. Collins ; D. Bayliss ; E. Sedaghati ; D. W. Latham ; S. Seager ; J. N. Winn ; J. M. Jenkins ; J. C. Smith ; M. Davies ; P. Tenenbaum ; J. Dittmann ; A. Vanderburg ; J. L. Christiansen ; K. Haworth ; J. Doty ; G. Furesz ; G. Laughlin ;
Date:	13 Nov 2018
Abstract:	We report on the confirmation of a transiting giant planet around the relatively hot (Teff = 6801 $pm$ 56 K) star HD2685, whose transit signal was detected in Sector 1 data of the TESS mission. We confirmed the planetary nature of the transit signal by using Doppler velocimetric measurements with CHIRON, CORALIE and FEROS, as well as photometric data with CHAT and LCOGT. From the photometry and radial velocities joint analysis, we derived the following parameters for HD2685 $b$: $P$=4.12692$pm$0.00004 days, M$_P$=1.18 $pm$ 0.09 $M_J$ and $R_P$=1.44 $pm$ 0.01 $R_J$. This system is a typical example of an inflated transiting Hot-Jupiter in a circular orbit. Given the host star apparent visual magnitude ($V$ = 9.6 mag), this is one of the brightest known stars hosting a transiting Hot-Jupiter, and 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 via the Rossiter-McLaughlin effect.
Source:	arXiv, 1811.5518
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