Abstract
The TASTE project is searching for low-mass planets with the transit
timing variation (TTV) technique by gathering high-precision,
short-cadence light curves for a selected sample of transiting
exoplanets. It has been claimed that the "hot Jupiter" WASP-3b could be
perturbed by a second planet. Presenting eleven new light curves
(secured at the IAC80 and UDEM telescopes) and re-analyzing thirty-eight
archival light curves in a homogeneous way, we show that new data do not
confirm the previously claimed TTV signal. However, we bring evidence
that measurements are not consistent with a constant orbital period,
though no significant periodicity can be detected. Additional dynamical
modeling and follow-up observations are planned to constrain the
properties of the perturber or to put upper limits to it. We provide a
refined ephemeris for WASP-3b and improved orbital/physical parameters.
A contact eclipsing binary, serendipitously discovered among field
stars, is reported here for the first time.
(2 data files).
Original language | English |
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Journal | VizieR On-line Data Catalog: J/A+A/549/A30. Originally published in: 2013A&A...549A..30N |
Volume | 354 |
Publication status | Published - 1 Feb 2013 |