High-precision photometry by telescope defocusing – IV. Confirmation of the huge radius of WASP-17 b†

@inproceedings{Southworth2012HighprecisionPB,
  title={High-precision photometry by telescope defocusing – IV. Confirmation of the huge radius of WASP-17 b†},
  author={John Southworth and M. Dominik and X.-S. Fang and Kasper Harps{\o}e and Uffe Gr{\aa}e J{\o}rgensen and Eamonn Kerins and Christine Liebig and L Mancini and Jesper Skottfelt and Douglas R. Anderson and Barry Smalley and Jeremy Tregloan-Reed and Olivier Wertz and K. A. Alsubai and Valerio Bozza and Sebastiano Calchi Novati and Stefan Dreizler and S.-H. Gu and Tobias Cornelius Hinse and M. P. G. Hundertmark and Jens Jessen-Hansen and No{\'e} Kains and Hans Kjeldsen and Mikkel N. Lund and Mia Lundkvist and M. Mathiasen and Matthew T. Penny and Sohrab Rahvar and Davide Ricci and Gaetano Scarpetta and Colin Snodgrass and Jean Surdej},
  year={2012}
}
We present photometric observations of four transits in the WASP-17 planetary system, obtained using telescope defocusing techniques and with scatters reaching 0.5?mmag per point. Our revised orbital period is 4.0 +/- 0.6?s longer than previous measurements, a difference of 6.6s, and does not support the published detections of orbital eccentricity in this system. We model the light curves using the jktebop code and calculate the physical properties of the system by recourse to five sets of… CONTINUE READING

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L Hebb
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