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Temple, LY, Hellier, C, Albrow, MD, Anderson, DR, Bayliss, D, Beatty, TG, Bieryla, A, Brown, DJA, Cargile, PA, Cameron, AC, Collins, KA, Colon, KD, Curtis, IA, D Ago, G, Delrez, L, Eastman, J, Gaudi, BS, Gillon, M, Gregorio, J, James, D, Jehin, E, Joner, MD, Kielkopf, JF, Kuhn, RB, Labadie-Bartz, J, Latham, DW, Lendl, M, Lund, MB, Malpas, AL, Maxted, PFL, Myers, G, Oberst, TE, Pepe, F, Pepper, J, Pollacco, D, Queloz, D, Rodriguez, JE, Segransan, D, Siverd, RJ, Smalley, B, Stassun, KG, Stevens, DJ, Stockdale, C, Tan, TG, Triaud, AHMJ, Udry, S, Villanueva, S, 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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Abstract

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: 18 Jun 2018 14:10
URI: https://eprints.keele.ac.uk/id/eprint/4022

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