J/A+A/549/A30 Light curves of WASP-3b (Nascimbeni+, 2013)
TASTE. III. A homogeneous study of transit time variations in WASP-3b.
Nascimbeni V., Cunial A., Murabito S., Sada P. V., Aparicio A., Piotto G.,
Bedin L. R., Milone A. P., Rosenberg A., Zurlo A., Borsato L., Damasso M.,
Granata V., Malavolta L.
<Astron. Astrophys. 549, A30 (2013)>
=2013A&A...549A..30N 2013A&A...549A..30N
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: techniques: photometric - planetary systems -
stars: individual: WASP-3
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.
Objects:
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RA (2000) DE Designation(s) (Per)
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18 34 31.6 +35 39 41 WASP-3 = TYC 2636-195-1 (1.85)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
iac80.dat 36 3877 Six light curves of WASP-3b (IAC-80)
udem.dat 36 2258 Five light curves of WASP-3b (UDEM)
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See also:
J/A+A/527/A85 : Light curves of HAT-P-3b and HAT-P-14b (Nascimbeni+, 2011)
J/A+A/532/A24 : Light curves of HAT-P-13b (Nascimbeni+, 2011)
Byte-by-byte Description of file: iac80.dat udem.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- N [1/6] Transit ID
4- 18 F15.6 d BJD Barycentric Julian Day (TDB-based)
20- 27 F8.5 mag mag Normalized magnitude
29- 36 F8.5 mag e_mag Error on magnitude
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Acknowledgements:
Valerio Nascimbeni, valerio.nascimbeni(at)unipd.it
References:
Nascimbeni et al., Paper I 2011A&A...527A..85N 2011A&A...527A..85N, Cat. J/A+A/527/A85
Nascimbeni et al., Paper II 2011A&A...532A..24N 2011A&A...532A..24N, Cat. J/A+A/532/A24
(End) Valerio Nascimbeni [UNIPD, Italy], Patricia Vannier [CDS] 26-Feb-2013