2018/12/21 by D. R. Anderson, F. Bouchy, Anderson, D. R. +51
Earth and Planetary Sciences · Physics and Astronomy · #Astro and Planetary Science #Earth and Planetary Astrophysics (astro-ph.EP) #FOS: Physical sciences #High-pressure geophysics and materials #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.48550/arxiv.1812.09264
Submitted to AJ. 10 pages, 8 figures, 4 tables
arxiv created 2018/12/21 · openalex publication_date 2018/12/21 · arxiv updated 2018/12/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report the discovery by WASP of five planets orbiting moderately bright (V = 11.0-12.9) Solar-type stars. WASP-137b, WASP-143b and WASP-146b are typical hot Jupiters in orbits of 3-4 d and with masses in the range 0.68--1.11 M\rm Jup. WASP-134 is a metal-rich ([Fe/H] = +0.40 ± 0.07]) G4 star orbited by two warm Jupiters: WASP-134b (M\rm pl = 1.41 M\rm Jup; P = 10.1 d; e = 0.15 ± 0.01; T\rm eql = 950 K) and WASP-134c (M\rm pl sin i = 0.70 M\rm Jup; P = 70.0 d; e = 0.17 ± 0.09; T\rm eql = 500 K). From observations of the Rossiter-McLaughlin effect of WASP-134b, we find its orbit to be misaligned with the spin of its star (λ= -44 ± 10^∘). WASP-134 is a rare example of a system with a short-period giant planet and a nearby giant companion. In-situ formation or disc migration seem more likely explanations for such systems than does high-eccentricity migration.