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Discovery of three new transiting hot Jupiters: WASP-161 b, WASP-163 b and WASP-170 b

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Author(s)

K. Barkaoui, A. Burdanov, C. Hellier, M. Gillon, B. Smalley, P. F. L. Maxted, M. Lendl, A. H. M. J. Triaud, J. Anderson, J. McCormac, E. Jehin, Y. Almleaky, D. J. Armstrong, Z. Benkhaldoun, F. Bouchy, D. J. A. Brown, A. C. Cameron, A. Daassou, L. Delrez, E. Ducrot & 11 others E. Foxell, C. Murray, L. D. Nielsen, F. Pepe, D. Pollacco, F. J. Pozuelos, D. Queloz, D. Segransan, S. Udry, S. Thompson, R. G. West

School/Research organisations

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 ± 0.2 MJup and radius R p = 1.14 ± 0.06 RJup. WASP-163 b orbits around its host star (spectral type G8V and magnitude V = 12.5) every 1.609 days, has a mass of M p = 1.9 ± 0.2 MJup and a radius of R p = 1.2 ± 0.1 RJup. WASP-170 b has a mass of 1.7 ± 0.2 MJup and a radius of 1.14 ± 0.09 RJup and is on a 2.344 days orbit around a G1V-type star of magnitude V=12.8. Given the 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.
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Original languageEnglish
Article number43
Number of pages10
JournalAstronomical Journal
Volume157
Issue number2
Early online date11 Jan 2019
DOIs
Publication statusPublished - Feb 2019

    Research areas

  • Planetary systems, Techniques: photometric, Techniques: radial velocities, Techniques: spectroscopic

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ID: 256707295

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