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Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b

Maxted; Smalley; Hellier

Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b Thumbnail


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Abstract

We present the discovery of three new transiting hot Jupiters by the WASP-South project, WASP-161 b, WASP-163 b, and WASP-170 b. Follow-up radial velocities obtained with the Euler/CORALIE spectrograph and transit light curves obtained with the TRAPPIST-North, TRAPPIST-South, SPECULOOS-South, NITES, and Euler telescopes have enabled us to determine the masses and radii for these transiting exoplanets. WASP-161 b completes an orbit around its V = 11.1 F6V-type host star in 5.406 days, and has a mass M p = 2.5 ± 0.2M Jup and radius R p = 1.14 ± 0.06 R Jup. WASP-163 b orbits around its host star (spectral type G8V and the magnitude V = 12.5) every 1.609 days, and has a mass of M P = 1.9 ± 0.2 M Jup and a radius of R p = 1.2 ± 0.1 R Jup. WASP-170 b has a mass of 1.7 ± 0.2 M Jup and a radius of 1.14 ± 0.09 R Jup and is on a 2.344 day orbit around a G1V-type star of magnitude V = 12.8. Given their irradiations (~109 erg s-1 cm-2) and masses, the three new planets' sizes are in good agreement with classical models of irradiated giant planets.

Acceptance Date Nov 25, 2018
Publication Date Jan 11, 2019
Publicly Available Date Mar 28, 2024
Journal Astronomical Journal
Print ISSN 0004-6256
Publisher American Astronomical Society
Pages 43
DOI https://doi.org/10.3847/1538-3881/aaf422
Keywords planetary systems, techniques, photometric, radial velocities, spectroscopic
Publisher URL https://doi.org/10.3847/1538-3881/aaf422

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