PHYSICAL PROPERTIES OF THE 0.94-DAY PERIOD TRANSITING PLANETARY SYSTEM WASP-18

@article{Southworth2009PHYSICALPO,
  title={PHYSICAL PROPERTIES OF THE 0.94-DAY PERIOD TRANSITING PLANETARY SYSTEM WASP-18},
  author={John Southworth and Tobias C. Hinse and Martin Dominik and M. Glitrup and U. G. J{\o}rgensen and Christine Liebig and M S Mathiasen and D. R. Anderson and Valerio Bozza and Patrick J. Browne and Martin J. Burgdorf and Sebastiano Calchi Novati and Stefan Dreizler and François Finet and Kennet B. W. Harpsoe and Frederic V. Hessman and M. Hundertmark and Gert Maier and Luigi Mancini and Pierre F. L. Maxted and Sohrab Rahvar and D. Ricci and G. Scarpetta and Jesper F. Skottfelt and Colin Snodgrass and Jean Surdej and Fabian Zimmer},
  journal={The Astrophysical Journal},
  year={2009},
  volume={707},
  pages={167 - 172}
}
We present high-precision photometry of five consecutive transits of WASP-18, an extrasolar planetary system with one of the shortest orbital periods known. Through the use of telescope defocusing we achieve a photometric precision of 0.47–0.83 mmag per observation over complete transit events. The data are analyzed using the jktebop code and three different sets of stellar evolutionary models. We find the mass and radius of the planet to be Mb = 10.43 ±  0.30 ±  0.24 MJup and Rb = 1.165 ±  0… 

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