WASP-South hot Jupiters: WASP-178b, WASP-184b, WASP-185b, and WASP-192b
- Hellier, Coel Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
- Anderson, D R ORCID Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
- Barkaoui, K Astrobiology Research Unit, Université de Liège, Liège 1, Belgium
- Benkhaldoun, Z Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco
- Bouchy, F Observatoire astronomique de l’Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland
- Burdanov, A Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège 1, Belgium
- Cameron, A Collier ORCID SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
- Delrez, L ORCID Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK
- Gillon, M Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège 1, Belgium
- Jehin, E Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège 1, Belgium
- Nielsen, L D ORCID Observatoire astronomique de l’Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland
- Maxted, P F L Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
- Pepe, F Observatoire astronomique de l’Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland
- Pollacco, D Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
- Pozuelos, F J Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège 1, Belgium
- Queloz, D Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK
- Ségransan, D Observatoire astronomique de l’Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland
- Smalley, B ORCID Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
- Triaud, A H M J School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
- Turner, O D ORCID Observatoire astronomique de l’Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland
- Udry, S Observatoire astronomique de l’Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland
- West, R G ORCID Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
- 2019-9-30
Published in:
- Monthly Notices of the Royal Astronomical Society. - Oxford University Press (OUP). - 2019, vol. 490, no. 1, p. 1479-1487
English
ABSTRACT
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 ultrahot 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 per cent) 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.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1093/mnras/stz2713
- ISSN 0035-8711
- Persistent URL
- https://sonar.ch/global/documents/252795
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