Wasp-7: A bright transiting-exoplanet system in the southern hemisphere

  title={Wasp-7: A bright transiting-exoplanet system in the southern hemisphere},
  author={Coel Hellier and D. R. Anderson and Micha{\"e}l Gillon and Tim A. Lister and Pierre F. L. Maxted and Didier Queloz and Barry Smalley and A. H. M. J. Triaud and Richard G. West and D. Mark Wilson and Khalid A. Alsubai and Samuel J. Bentley and Andrew Collier Cameron and Leslie Hebb and Keith Horne and Jonathan M. Irwin and Stephen R. Kane and Michel Mayor and Francesco A. Pepe and Don Pollacco and Ian Skillen and St{\'e}phane Udry and Peter J. Wheatley and Damian J. Christian and Rachel M. Enoch and Carole A. Haswell and Yogesh C. Joshi and Andrew J. Norton and R. S. I. Ryans and Rachel A. Street and Ian Todd},
We report that a Jupiter-mass planet, WASP-7b, transits the V = 9.5 star HD197286 every 4.95 d. This is the brightest discovery from the WASP-South transit survey and 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 M_Jup, the radius 0.915 R_Jup, and the density 1.26 rho_Jup. 

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