McCormac, J, Gillen, E, Jackman, JAG, Brown, DJA, Bayliss, D, Wheatley, PJ, West, RG, Anderson, DR, Armstrong, DJ, Bouchy, F, Briegal, JT, Burleigh, MR, Cabrera, J, Casewell, SL, Chaushev, A, Chazelas, B, Chote, P, Cooke, BF, Costes, JC, Csizmadia, S, Eigmuller, P, Erikson, A, Foxell, E, Gaensicke, BT, Goad, MR, Gunther, MN, Hodgkin, ST, Hooton, MJ, Jenkins, JS, Lambert, G, Lendl, M, Longstaff, E, Louden, T, Moyano, M, Nielsen, LD, Pollacco, D, Queloz, D, Rauer, H, Raynard, L, Smith, AMS, Smalley, B, Soto, M, Turner, O, Udry, S, Vines, JI, Walker, SR and Watson, CA (2020) NGTS-10b: The shortest period hot Jupiter yet discovered. Monthly Notices of the Royal Astronomical Society, 493 (1). pp. 126-140. ISSN 1365-2966

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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: Article
Uncontrolled Keywords: techniques: photometric; stars: individual: NGTS-10; planetary systems
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Q Science > QB Astronomy > QB799 Stars
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 04 Oct 2019 15:40
Last Modified: 24 Apr 2020 14:17

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