WASP-3b : a strongly irradiated transiting gas-giant planet
- Pollacco, Don
- Skillen, I.
- Collier Cameron, A.
- Loeillet, B.
- Stempels, H. C.
- Bouchy, F.
- Gibson, N. P.
- Hebb, L.
- Hébrard, G.
- Joshi, Y. C.
- McDonald, I.
- Smalley, B.
- Smith, A. M. S.
- Street, R. A.
- Udry, S.
- West, Richard G.
- Wilson, D. M.
- Wheatley, P. J.
- Aigrain, S.
- Alsubai, K.
- Benn, C. R.
- Bruce, V. A.
- Christian, D. J.
- Clarkson, W. I.
- Enoch, B.
- Evans, A.
- Fitzsimmons, A.
- Haswell, C. A.
- Hellier, C.
- Hickey, S.
- Hodgkin, S. T.
- Horne, K.
- Hrudkova, Marie
- Irwin, J.
- Kane, S. R.
- Keenan, F. P.
- Lister, T. A.
- Maxted, P.
- Mayor, M.
- Moutou, C.
- Norton, A. J.
- Osbourne, J. P.
- Parley, N.
- Pont, F.
- Queloz, D.
- Ryans, R.
- Simpson, E.
- HASH(0x562bf1b4dde8)
DOIAbstract
We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.0 1256-0285133 every 1.846 834 +/- 0.000 002 d. Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. We make a preliminary spectroscopic analysis of the host star and find it to have T-eff = 6400 +/- 100 K and log g = 4.25 +/- 0.05 which suggests it is most likely an unevol...
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