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arXiv · 1105.4603

TASTE. II. A new observational study of transit time variations in HAT-P-13b

V. Nascimbeni·G. Piotto·L. R. Bedin·M. Damasso·L. Malavolta·L. Borsato
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Abstract

TASTE (The Asiago Search for Transit timing variations of Exoplanets) project is collecting high-precision, short-cadence light curves for a selected sample of transiting exoplanets. It has been claimed that the hot jupiter HAT-P-13b suddenly deviated from a linear ephemeris by $\sim 20$ min, implying that there is a perturber in the system. Using five new transits, we discuss the plausibility of this transit time variation (TTV), and show that a periodic signal should not be excluded. More follow-up observations are required to constrain the mass and the orbit of the hypothetical perturber.

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V. Nascimbeni, G. Piotto, L. R. Bedin, M. Damasso, L. Malavolta, L. Borsato. 2011-05-23. TASTE. II. A new observational study of transit time variations in HAT-P-13b. https://doi.org/10.1051/0004-6361/201116830

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