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WASP-180Ab: Doppler tomography of an hot Jupiter orbiting the primary star in a visual binary

Temple, L Y; Hellier, C; Anderson, D R; Barkaoui, K; Bouchy, F; Brown, D J A; Burdanov, A; Collier Cameron, A; Delrez, L; Ducrot, E; Evans, D; Gillon, M; Jehin, E; Lendl, M; Maxted, P F L; McCormac, J; Murray, C; Nielsen, L D; Pepe, F; Pollacco, D; Queloz, D; Ségransan, D; Smalley, B; Thompson, S; Triaud, A H M J; Turner, O D; Udry, S; West, R G; Zouhair, B

WASP-180Ab: Doppler tomography of an hot Jupiter orbiting the primary star in a visual binary Thumbnail


Authors

L Y Temple

D R Anderson

K Barkaoui

F Bouchy

D J A Brown

A Burdanov

A Collier Cameron

L Delrez

E Ducrot

D Evans

M Gillon

E Jehin

M Lendl

J McCormac

C Murray

L D Nielsen

F Pepe

D Pollacco

D Queloz

D Ségransan

S Thompson

A H M J Triaud

O D Turner

S Udry

R G West

B Zouhair



Abstract

We report the discovery and characterization of WASP-180Ab, a hot Jupiter confirmed by the detection of its Doppler shadow and by measuring its mass using radial velocities. We find the 0.9  ±  0.1 MJup, 1.24  ±  0.04 RJup planet to be in a misaligned, retrograde orbit around an F7 star with Teff  =  6500 K and a moderate rotation speed of vsin i⋆  =  19.9 km s−1. The host star is the primary of a V  =  10.7 binary, where a secondary separated by ∼5 arcsec (∼1200 au) contributes ∼ 30 per cent of the light. WASP-180Ab therefore adds to a small sample of transiting hot Jupiters known in binary systems. A 4.6-d modulation seen in the WASP data is likely to be the rotational modulation of the companion star, WASP-180B.

Citation

Temple, L. Y., Hellier, C., Anderson, D. R., Barkaoui, K., Bouchy, F., Brown, D. J. A., …Zouhair, B. (2019). WASP-180Ab: Doppler tomography of an hot Jupiter orbiting the primary star in a visual binary. Monthly Notices of the Royal Astronomical Society, 490(2), 2467-2474. https://doi.org/10.1093/mnras/stz2632

Journal Article Type Article
Acceptance Date Sep 20, 2019
Online Publication Date Sep 20, 2019
Publication Date Dec 1, 2019
Publicly Available Date May 26, 2023
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 490
Issue 2
Pages 2467-2474
DOI https://doi.org/10.1093/mnras/stz2632
Keywords techniques: photometric, spectroscopic, planetary systems, stars: rotation
Publisher URL https://academic.oup.com/mnras/article/490/2/2467/5572277

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