Discovery of WASP-174b:Doppler tomography of a near-grazing transit
- Temple, L. Y.
- Hellier, C.
- Almleaky, Y.
- Anderson, D. R.
- Bouchy, F.
- Brown, D. J. A.
- Burdanov, A.
- Cameron, A. Collier
- Delrez, L.
- Gillon, M.
- Hall, R.
- Jehin, E.
- Lendl, M.
- Maxted, P. F. L.
- Nielsen, L. D.
- Pepe, F.
- Pollacco, D.
- Queloz, D.
- Ségransan, D.
- Smalley, B.
- Sohy, S.
- Thompson, S.
- Triaud, A. H. M. J.
- Turner, O. D.
- Udry, S.
- West, R. G.
Publication date
November 2018
DOIAbstract
We report the discovery and tomographic detection of WASP-174b, a planet with a near-grazing transit on a 4.23-d orbit around a V= 11.9, F6V star with [Fe/H] = 0.09 ± 0.09. The planet is in a moderately misaligned orbit with a sky-projected spin–orbit angle of λ = 31° ± 1°. This is in agreement with the known tendency for orbits around hotter stars to be misaligned. Owing to the grazing transit, the planet’s radius is uncertain with a possible range of 0.8–1.8 RJup. The planet’s mass has an upper limit of 1.3 MJup. WASP-174 is the faintest hot-Jupiter system so far confirmed by tomographic means
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