There have been previous hints that the transiting planet WASP-3 b is accompanied by a second planet in a nearby orbit, based on small deviations from strict periodicity of the observed transits. Here we present 17 precise radial velocity measurements and 32 transit light curves that were acquired between 2009 and 2011. These data were used to refine the parameters of the host star and transiting planet. This has resulted in reduced uncertainties for the radii and masses of the star and planet. The radial-velocity data and the transit times show no evidence for an additional planet in the system. Therefore, we have determined the upper limit on the mass of any hypothetical second planet, as a function of its orbital period.
@article{arxiv.1309.6733,
title = {Constraints on a second planet in the WASP-3 system},
author = {G. Maciejewski and A. Niedzielski and A. Wolszczan and G. Nowak and R. Neuhaeuser and J. N. Winn and B. Deka and M. Adamów and M. Górecka and M. Fernandez and F. J. Aceituno and J. Ohlert and R. Errmann and M. Seeliger and D. Dimitrov and D. W. Latham and G. A. Esquerdo and L. McKnight and M. J. Holman and E. L. N. Jensen and U. Kramm and T. Pribulla and St. Raetz and T. O. B. Schmidt and Ch. Ginski and S. Mottola and S. Hellmich and Ch. Adam and H. Gilbert and M. Mugrauer and G. Saral and V. Popov and M. Raetz},
journal= {arXiv preprint arXiv:1309.6733},
year = {2015}
}
Comments
Accepted for publication in The Astronomical Journal