학술논문
NGTS-10b: The shortest period hot Jupiter yet discovered
Document Type
Working Paper
Author
McCormac, James; Gillen, Edward; Jackman, James A. G.; Brown, David J. A.; Bayliss, Daniel; Wheatley, Peter J.; West, Richard G.; Anderson, David R.; Armstrong, David J.; Bouchy, Francois; Briegal, Joshua T.; Burleigh, Matthew R.; Cabrera, Juan; Casewell, Sarah L.; Chaushev, Alexander; Chazelas, Bruno; Chote, Paul; Cooke, Benjamin F.; Costes, Jean C.; Csizmadia, Szilard; Eigmuller, Philipp; Erikson, Anders; Foxell, Emma; Gaensicke, Boris T.; Goad, Michael R.; Gunther, Maximilian N.; Hodgkin, Simon T.; Hooton, Matthew J.; Jenkins, James S.; Lambert, Gregory; Lendl, Monika; Longstaff, Emma; Louden, Tom; Moyano, Maximiliano; Nielsen, Louise D.; Pollacco, Don; Queloz, Didier; Rauer, Heike; Raynard, Liam; Smith, Alexis M. S.; Smalley, Barry; Soto, Maritza; Turner, Oliver; Udry, Stephane; Vines, Jose I.; Walker, Simon. R.; Watson, Christopher A.
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Subject
Language
Abstract
We report the discovery of a new ultra-short period transiting hot Jupiter from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius of $2.162\,^{+0.092}_{-0.107}$ M$_{\rm J}$ and $1.205\,^{+0.117}_{-0.083}$ R$_{\rm J}$ and orbits its host star with a period of $0.7668944\pm0.0000003$ days, making it the shortest period hot Jupiter yet discovered. The host is a $10.4\pm2.5$ Gyr old K5V star ($T_\mathrm{eff}$=$4400\pm100$\,K) of Solar metallicity ([Fe/H] = $-0.02\pm0.12$\,dex) showing moderate signs of stellar activity. NGTS-10b joins a short list of ultra-short period Jupiters that are prime candidates for the study of star-planet tidal interactions. NGTS-10b orbits its host at just $1.46\pm0.18$ Roche radii, and we calculate a median remaining inspiral time of $38$\,Myr and a potentially measurable transit time shift of $7$\,seconds over the coming decade, assuming a stellar tidal quality factor $Q'_{\rm s}=2\times10^{7}$.
Comment: 16 pages, 19 figures and 5 tables. Submitted 27 Sept 2019. Accepted 10 Jan 2020. Published 20 Feb 2020
Comment: 16 pages, 19 figures and 5 tables. Submitted 27 Sept 2019. Accepted 10 Jan 2020. Published 20 Feb 2020