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19 April 2024

» arxiv » 1904.7997

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NGTS-6b: An Ultra Hot-Jupiter Orbiting a Metal-rich star
Jose I. Vines ; James S. Jenkins ; Jack S. Acton ; Daniel Bayliss ; François Bouchy ; Claudia Belardi ; Edward M. Bryant ; Matthew R. Burleigh ; Juan Cabrera ; Sarah L. Casewell ; Alexander Chaushev ; Benjamin F. Cooke ; Szilard Csizmadia ; Philipp Eigmüller ; Andres Erikson ; Emma Foxell ; Samuel Gill ; Edward Gillen ; Michael R. Goad ; James A. G. Jackman ; George W. King ; Tom Louden ; James McCormac ; Maximiliano Moyano ; Louise D. Nielsen ; Don Pollacco ; Didier Queloz ; Heike Rauer ; Liam Raynard ; Alexis M. S. Smith ; Rosanna H. Tilbrook ; Ruth Titz-Weider ; Oliver Turner ; Stéphane Udry ; Simon R. Walker ; Christopher A. Whatson ; Richard G. West ; Peter J. Wheatley ;
Date:	17 Apr 2019
Abstract:	We report the discovery of a new ultra hot Jupiter from the Next Generation Transit Survey. NGTS-6b orbits its star with a period of 21.17 h, and has a mass and radius of $1.330^{+0.024}_{-0.028},M_J$ and $1.271^{+0.197}_{-0.188},R_J$ respectively. Conforming to the currently known small population of ultra hot Jupiters, the planet is also found to orbit a metal-rich star ([Fe/H]$=+0.11pm0.09$ dex). Photoevaporation models suggest the planet should have lost 5% of its gaseous atmosphere over the course of the 9.6~Gyrs of evolution of the system. NGTS-6b adds to the small, but growing, list of ultra-short period gas giant planets, and will help us to understand the dominant formation and evolutionary mechanisms that govern this population.
Source:	arXiv, 1904.7997
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