Wasp-7: A Bright Transiting-Exoplanet System in the Southern Hemisphere
- Hellier, Coel
- Anderson, D. R.
- Gillon, Michaël
- Lister, T. A.
- Maxted, P. F. L.
- Queloz, D.
- Smalley, B.
- Triaud, A H M J
- West, R. G.
- Wilson, D. M.
- Alsubai, K.
- Bentley, S. J.
- Cameron, A Collier
- Hebb, L.
- Horne, K.
- Irwin, J.
- Kane, S. R.
- Mayor, M.
- Pepe, F.
- Pollacco, D.
- Skillen, I.
- Udry, S.
- Wheatley, P. J.
- Christian, D. J.
- Enoch, R.
- Haswell, C. A.
- Joshi, Y. C.
- Norton, A. J.
- Parley, N.
- Ryans, R.
- Street, R. A.
- Todd, I.
DOIAbstract
We report that a Jupiter-mass planet, WASP-7b, transits the V = 9.5 star HD 197286 every 4.95 d. This is the brightest discovery from the WASP-South transit survey so far and is currently the brightest transiting-exoplanet system in the southern hemisphere. WASP-7b is among the densest of the known Jupiter-mass planets, suggesting that it has a massive core. The planet mass is 0.96[SUP]+0.12[/SUP] [SUB]--0.18[/SUB] M [SUB]Jup[/SUB], the radius is 0.915[SUP]+0.046[/SUP] [SUB]--0.040[/SUB] R [SUB]Jup[/SUB], and the density is 1.26[SUP]+0.25[/SUP] [SUB]--0.21[/SUB] rho[SUB]Jup[/SUB] (1.67[SUP]+0.33[/SUP] [SUB]--0.28[/SUB] g cm[SUP]--3[/SUP])
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