Hellier, C, Anderson, DR, Barkaoui, K, Benkhaldoun, Z, Bouchy, F, Burdanov, A, Cameron, AC, Delrez, L, Gillon, M, Jehin, E, Nielsen, LD, Maxted, PFL, Pepe, F, Pollacco, D, Pozuelos, FJ, Queloz, D, Ségransan, D, Smalley, B, Triaud, AHMJ, Turner, OD, Udry, S and West, RG (2019) WASP-South hot Jupiters: WASP-178b, WASP-184b, WASP-185b & WASP-192b. Monthly Notices of the Royal Astronomical Society, 490 (1). pp. 1479-1487. ISSN 0035-8711

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We report on four new transiting hot Jupiters discovered by the WASP-South survey. WASP-178b transits a V = 9.9, A1V star with Teff = 9350 ± 150 K, the second-hottest transit host known. It has a highly bloated radius of 1.81 ± 0.09 RJup, in line with the known correlation between high irradiation and large size. With an estimated temperature of 2470 ± 60 K, the planet is one of the best targets for studying ultra-hot Jupiters that is visible from the Southern hemisphere. The three host stars WASP-184, WASP-185 and WASP-192 are all post-main-sequence G0 stars of ages 4–8 Gyr. The larger stellar radii (1.3–1.7 M⊙) mean that the transits are relatively shallow (0.7–0.9%) even though the planets have moderately inflated radii of 1.2–1.3 RJup. WASP-185b has an eccentric orbit (e = 0.24) and a relatively long orbital period of 9.4 d. A star that is 4.6 arcsec from WASP-185 and 4.4 mag fainter might be physically associated.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Oxford University Press at https://doi.org/10.1093/mnras/stz2713 - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: stars: individual: WASP-178, stars: individual: WASP-184, stars: individual: WASP-185, stars: individual: WASP-192, planetary systems
Subjects: Q Science > QB Astronomy > QB799 Stars
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Depositing User: Symplectic
Date Deposited: 04 Oct 2019 14:14
Last Modified: 09 Dec 2019 16:08
URI: https://eprints.keele.ac.uk/id/eprint/6986

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