A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b

  title={A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b},
  author={Richard Brothwell and Christopher A. Watson and Guillaume H{\'e}brard and Amaury H. M. J. Triaud and Heather M. Cegla and Alexandre Santerne and {\'E}. H{\'e}brard and D. R. Anderson and Don Pollacco and Elaine Simpson and François Bouchy and D. J. A. Brown and Yilen G'omez Maqueo Chew and Andrew Collier Cameron and David J Armstrong and S. C. C. Barros and Joao Bento and J. Bochiński and Vadim Burwitz and R. Busuttil and Laetitia Delrez and Amanda P. Doyle and Francesca Faedi and Aur{\'e}lie Fumel and Micha{\"e}l Gillon and Carole A. Haswell and Coel Hellier and Emmanuel Jehin and Ulrich C. Kolb and Monika Lendl and Christine Liebig and P. F. L. Maxted and J. McCormac and Grant R. M. Miller and Andrew J. Norton and Francesco A. Pepe and Didier Queloz and J. E. Rodriguez and Damien S{\'e}gransan and Ian Skillen and Barry Smalley and Keivan G. Stassun and St{\'e}phane Udry and Richard G. West and Peter J. Wheatley},
  journal={Monthly Notices of the Royal Astronomical Society},
We present Rossiter-McLaughlin observations of WASP-13b and WASP-32b and determine the sky-projected angle between the normal of the planetary orbit and the stellar rotation axis ( ). WASP-13b and WASP-32b both have prograde orbits and are consistent with alignment with measured sky-projected angles of = 8 +13 12 and = 2 +17 19 , respectively. Both WASP-13 and WASP-32 have Te < 6250K and therefore these systems support the general trend that aligned planetary systems are preferentially found… 

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