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

doi:10.1093/mnras/stz2632

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

Authors

L Y Temple

Coel Hellier c.hellier@keele.ac.uk

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

Pierre Maxted p.maxted@keele.ac.uk

J McCormac

C Murray

L D Nielsen

F Pepe

D Pollacco

D Queloz

D Ségransan

Barry Smalley b.smalley@keele.ac.uk

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