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Constraints on a second planet in the WASP-3 system

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arxiv 1309.6733 v1 pith:6OQECVDE submitted 2013-09-26 astro-ph.EP

G. Maciejewski , A. Niedzielski , A. Wolszczan , G. Nowak , R. Neuhaeuser , J.N. Winn , B. Deka , M. Adamów
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M. Górecka M. Fernandez F.J. Aceituno J. Ohlert R. Errmann M. Seeliger D. Dimitrov D.W. Latham G.A. Esquerdo L. McKnight M.J. Holman E.L.N. Jensen U. Kramm T. Pribulla St. Raetz T.O.B. Schmidt Ch. Ginski S. Mottola S. Hellmich Ch. Adam H. Gilbert M. Mugrauer G. Saral V. Popov M. Raetz
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classification astro-ph.EP
keywords planetseconddatastarsystemtransittransitingwasp-3
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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.

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