Temple, LY and Hellier, C and Albrow, MD and Anderson, DR and Bayliss, D and Beatty, TG and Bieryla, A and Brown, DJA and Cargile, PA and Cameron, AC and Collins, KA and Colon, KD and Curtis, IA and D Ago, G and Delrez, L and Eastman, J and Gaudi, BS and Gillon, M and Gregorio, J and James, D and Jehin, E and Joner, MD and Kielkopf, JF and Kuhn, RB and Labadie-Bartz, J and Latham, DW and Lendl, M and Lund, MB and Malpas, AL and Maxted, PFL and Myers, G and Oberst, TE and Pepe, F and Pepper, J and Pollacco, D and Queloz, D and Rodriguez, JE and Segransan, D and Siverd, RJ and Smalley, B and Stassun, KG and Stevens, DJ and Stockdale, C and Tan, TG and Triaud, AHMJ and Udry, S and Villanueva, S and West, RG and Zhou, G (2017) WASP-167b/KELT-13b: joint discovery of a hot Jupiter transiting a rapidly rotating F1V star. Monthly Notices of the Royal Astronomical Society, 471. 2743 - 2752. ISSN 0035-8711

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We report the joint WASP/KELT discovery of WASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a V = 10.5, F1V star with [Fe/H] = 0.1 +/- 0.1. The 1.5 R-Jup planet was confirmed by Doppler tomography of the stellar line profiles during transit. We place a limit of <8 M-Jup on its mass. The planet is in a retrograde orbit with a sky-projected spin-orbit angle of lambda = -165 degrees +/- 5 degrees. This is in agreement with the known tendency for orbits around hotter stars to be more likely to be misaligned. WASP-167/KELT-13 is one of the few systems where the stellar rotation period is less than the planetary orbital period. We find evidence of non-radial stellar pulsations in the host star, making it a delta-Scuti or gamma-Dor variable. The similarity to WASP-33, a previously known hot-Jupiter host with pulsations, adds to the suggestion that close-in planets might be able to excite stellar pulsations.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords: techniques, photometric, spectroscopic, planets and satellites, individual, stars, rotation
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Depositing User: Symplectic
Date Deposited: 18 Sep 2017 13:50
Last Modified: 16 Nov 2017 16:26
URI: http://eprints.keele.ac.uk/id/eprint/4022

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