WASP-120 b, WASP-122 b, and WASP-123 b: Three Newly Discovered Planets from the WASP-South Survey

Turner, O.D.; Anderson, D.R.; Collier Cameron, A.; Delrez, L.; Evans, D.F.; Gillon, M.; Hellier, C.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Smalley, B.; Smith, A.M.S.; Triaud, A.H.M.J.; Udry, S.; West, R.G.

Abstract

We present the discovery by the WASP-South survey of three planets transiting moderately bright stars (V ˜ 11). WASP-120 b is a massive (4.85 M Jup ) planet in a 3.6-day orbit that we find likely to be eccentric around an F5 star. WASP-122 b is a hot Jupiter (1.28 M Jup , 1.74 R Jup ) in a 1.7-day orbit about a G4 star. Our predicted transit depth variation caused by the atmosphere of WASP-122 b suggests it is well suited to characterization. WASP-123 b is a hot Jupiter (0.90 M Jup , 1.32 R Jup ) in a 3.0-day orbit around an old (~7 Gyr) G5 star.

Citation

Turner, O., Anderson, D., Collier Cameron, A., Delrez, L., Evans, D., Gillon, M., …West, R. (2016). WASP-120 b, WASP-122 b, and WASP-123 b: Three Newly Discovered Planets from the WASP-South Survey. Publications of the Astronomical Society of the Pacific, 128, Article 064401. https://doi.org/10.1088/1538-3873/128/964/064401

• Journal Article Type: Article
• Acceptance Date: Jan 4, 2016
• Online Publication Date: May 17, 2016
• Publication Date: May 17, 2016
• Journal: Publications of the Astronomical Society of the Pacific
• Print ISSN: 0004-6280
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 128
• Article Number: 064401
• DOI: https://doi.org/10.1088/1538-3873/128/964/064401
• Keywords: astrophysics, stars, astronomy
• Publisher URL: http://iopscience.iop.org/article/10.1088/1538-3873/128/964/064401/meta