From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b

  title={From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b},
  author={Kristine W. F. Lam and Francesca Faedi and D. J. A. Brown and D. R. Anderson and Laetitia Delrez and Micha{\"e}l Gillon and Guillaume H'ebrard and Monika Lendl and Luigi Mancini and John Southworth and Barry Smalley and A. H. M. J. Triaud and Oliver Turner and Kirstin Hay and David J Armstrong and S. C. C. Barros and Aldo Stefano Bonomo and François Bouchy and P Boumis and Andrew Collier Cameron and Amanda P. Doyle and Coel Hellier and Th. Henning and Emmanuel Jehin and George W King and James Kirk and Tom Louden and Pierre F. L. Maxted and J. McCormac and H. P. Osborn and Enric Pall{\'e} and Francesco A. Pepe and Don Pollacco and Jorge Prieto-arranz and Didier Queloz and Javiera Rey and Damien S'egransan and St{\'e}phane Udry and Simon. R. Walker and Richard G. West and Peter J. Wheatley},
  journal={Astronomy and Astrophysics},
We report three newly discovered exoplanets from the SuperWASP survey. WASP-127b is a heavily inflated super-Neptune of mass 0.18±0.02 M J and radius 1.37±0.04 R J . This is one of the least massive planets discovered by the WASP project. It orbits a bright host star ( V mag = 10.16) of spectral type G5 with a period of 4.17 days. WASP-127b is a low-density planet that has an extended atmosphere with a scale height of 2500 ± 400 km, making it an ideal candidate for transmission spectroscopy… 

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