WASP-167b/KELT-13b: joint discovery of a hot Jupiter transiting a rapidly rotating F1V star

Temple, L. Y. and Hellier, C. and Albrow, M. D. and Anderson, D. R. and Bayliss, D. and Beatty, T. G. and Bieryla, A. and Brown, D. J. A. and Cargile, P. A. and Collier Cameron, A. and Collins, K. A. and Colon, K. D. and Curtis, I. A. and D'Ago, G. and Delrez, L. and Eastman, J. and Gaudi, B. S. and Gillon, M. and Gregorio, J. and James, D. and Jehin, E. and Joner, M. D. and Kielkopf, J. F. and Kuhn, R. B. and Labadie-Bartz, J. and Latham, D. W. and Lendl, M. and Lund, M. B. and Malpas, A. L. and Maxted, P. F. L. and Myers, G. and Oberst, T. E. and Pepe, F. and Pepper, J. and Pollacco, D. and Queloz, D. and Rodriguez, J. E. and Segransan, D. and Siverd, R. J. and Smalley, B. and Stassun, K. G. and Stevens, D. J. and Stockdale, C. and Tan, T. G. and Triaud, A. H. M. J. and Udry, S. and Villanueva, S. and West, R. G. and Zhou, G. ORCID: https://orcid.org/0000-0002-4891-3517 (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 (3). pp. 2743-2752. ISSN 0035-8711

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We report the jointWASP/KELT discovery ofWASP-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 RJup planet was confirmed by Doppler tomography of the stellar line profiles during transit. We place a limit of < 8 MJup on its mass. The planet is in a retrograde orbit with a sky-projected spin-orbit angle of λ=-165° ±5°. 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 δ-Scuti or γ -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.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 07 Feb 2022 00:13
Last Modified: 14 Feb 2022 00:21
Uncontrolled Keywords: techniques: photometric; techniques: spectroscopic; planets and; satellites: individual; stars: individual; starts: rotation; Astrophysics - Earth and Planetary Astrophysics
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280120 Expanding knowledge in the physical sciences
Identification Number or DOI: https://doi.org/10.1093/mnras/stx1729
URI: http://eprints.usq.edu.au/id/eprint/45032

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