The highly inflated giant planet WASP-174b
- L. Mancini
- P. Sarkis
- Th. Henning
- G. Á. Bakos
- D. Bayliss
- J. Bento
- W. Bhatti
- R. Brahm
- Z. Csubry
- N. Espinoza
- J. Hartman
- A. Jordán
- K. Penev
- M. Rabus
- V. Suc
- M. de Val-Borro
- G. Zhou
- G. Chen
- M. Damasso
- J. Southworth
- T. G. Tan
DOIAbstract
Context. The transiting exoplanetary system WASP-174 was reported to be composed by a main-sequence F star (V = 11.8 mag) and a giant planet, WASP-174b (orbital period Porb = 4.23 days). However only an upper limit was placed on the planet mass (<1.3 MJup), and a highly uncertain planetary radius (0.7−1.7 RJup) was determined. Aims. We aim to better characterise both the star and the planet and precisely measure their orbital and physical parameters. Methods. In order to constrain the mass of the planet, we obtained new measurements of the radial velocity of the star and joined them with those from the discovery paper. Photometric data from the HATSouth survey and new multi-band, high-quality (precision reached up to 0.37 mmag) photometric ...
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