We present a photometric follow-up of transiting exoplanets HAT-P-3b and TrES-3b, observed by using several optical and near-infrared filters, with four small-class telescopes (D = 36--152cm) in the Northern Hemisphere. Two of the facilities present their first scientific results. New 10 HAT-P-3b light curves and new 26 TrES-3b light curves are reduced and combined by filter in order to improve the quality of the photometry. Combined light curves fitting is carried out independently by using two different analysis packages, allowing the corroboration of the orbital and physical parameters in the literature. Results find no differences in the relative radius with the observing filter. In particular, we report for HAT-P-3b a first estimation of the planet-to-star radius Rp/R* = 0.1112+0.0025-0.0026 in the B band which is coherent with values found in the VRIz'JH filters. Concerning TrES-3b, we derive a value for the orbital period of P = 1.3061862+-0.0000001 days which shows no linear variations over nine years of photometric observations.
@article{arxiv.1704.01112,
title = {Multi-filter transit observations of HAT-P-3b and TrES-3b with multiple Northern Hemisphere telescopes},
author = {Davide Ricci and Pedro Valdés Sada and Samuel Navarro-Meza and Ricardo López-Valdivia and Raúl Michel and Lester Fox Machado and Felipe Ramón-Fox and Carmen Ayala-Loera and Samantha Brown-Sevilla and Mauricio Reyes-Ruiz and Andrea La Camera and Chiara Righi and Lorenzo Cabona and Silvano Tosi and Nicola Truant and Steven Peterson and Jorge Prieto-Arranz and Sergio Velasco and Enric Pallé and Hans Deeg},
journal= {arXiv preprint arXiv:1704.01112},
year = {2017}
}
Comments
Accepted for publication in PASP; 9 pages, 6 figures, data will be published on CDS