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NGTS-10b : the shortest period hot Jupiter yet discovered
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(2020) NGTS-10b : the shortest period hot Jupiter yet discovered. Monthly Notices of the Royal Astronomical Society, 493 (1). pp. 126-140. doi:10.1093/mnras/staa115 ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1093/mnras/staa115
Abstract
We report the discovery of a new ultrashort period (USP) transiting hot Jupiter from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius of 2.162+0.092−0.107 MJ and 1.205+0.117−0.083 RJ and orbits its host star with a period of 0.7668944 ± 0.0000003 d, making it the shortest period hot Jupiter yet discovered. The host is a 10.4 ± 2.5 Gyr old K5V star (Teff = 4400 ± 100 K) of Solar metallicity ([Fe/H] = −0.02 ± 0.12 dex) showing moderate signs of stellar activity. NGTS-10b joins a short list of USP Jupiters that are prime candidates for the study of star–planet tidal interactions. NGTS-10b orbits its host at just 1.46 ± 0.18 Roche radii, and we calculate a median remaining inspiral time of 38 Myr and a potentially measurable orbital period decay of 7 s over the coming decade, assuming a stellar tidal quality factor Q′s =2 × 107.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||
| Library of Congress Subject Headings (LCSH): | Astronomical photometry, Planetary systems, Extrasolar planets, Outer planets | |||||||||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | |||||||||||||||
| Publisher: | Oxford University Press | |||||||||||||||
| ISSN: | 0035-8711 | |||||||||||||||
| Official Date: | March 2020 | |||||||||||||||
| Dates: |
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| Volume: | 493 | |||||||||||||||
| Number: | 1 | |||||||||||||||
| Page Range: | pp. 126-140 | |||||||||||||||
| DOI: | 10.1093/mnras/staa115 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
| Description: | Free Access |
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| Date of first compliant deposit: | 24 February 2020 | |||||||||||||||
| Date of first compliant Open Access: | 24 February 2020 | |||||||||||||||
| RIOXX Funder/Project Grant: |
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