WASP-78b and WASP-79b: two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus

B. Smalley, D.~R. Anderson, A. Collier-Cameron, A.~P. Doyle, A. Fumel, M. Gillon, C. Hellier, E. Jehin, M. Lendl, P.~F.~L. Maxted, F. Pepe, D. Pollacco, D. Queloz, D. Ségransan, A.~M.~S. Smith, J. Southworth, A.~H.~M.~J. Triaud, S. Udry, R.~G. West