Exoplanet Transits Registered at the Universidad de Monterrey Observatory. I. HATP12b, HATP13b, HATP16b, HATP23b, and WASP10b
Abstract
Forty transits of the exoplanets HATP12b, HATP13b, HATP16b, HATP23b, and WASP10b were recorded with the 0.36 m telescope at the Universidad de Monterrey Observatory. The images were captured with a standard JohnsonCousins Rc and Ic and Sloan z’ filters and processed to obtain individual light curves of the events. These light curves were successfully combined for each system to obtain a resulting one of higher quality, but with a slightly larger time sampling rate. A reduction by a factor of about four in perpoint scatter was typically achieved, resulting in combined light curves with a scatter of ∼1 mmag. The noise characteristics of the combined light curves were verified by comparing Allan variance plots of the residuals. The combined light curves for each system, along with radial velocity measurements from the literature when available, were modeled using a Monte Carlo method to obtain the essential parameters that characterize the systems. Our results for all these systems confirm the derived transit parameters (the planettostar radius ratio, {R}_{{{p}}}/{R}_{*}; the scaled semimajor axis, a/{R}_{*}; the orbital inclination, i; in some cases the eccentricity, e; and argument of periastron of the orbit, ω), validating the methodology. This technique can be used by small college observatories equipped with modestsized telescopes to help characterize known extrasolar planet systems. In some instances, the uncertainties of the essential transit parameters are also reduced. For HATP23b, in particular, we derive a planet size 4.5 ± 1.0% smaller. We also derive improved linear periods for each system, useful for scheduling observations.
 Publication:

Publications of the Astronomical Society of the Pacific
 Pub Date:
 February 2016
 DOI:
 10.1088/15383873/128/960/024402
 arXiv:
 arXiv:1601.02292
 Bibcode:
 2016PASP..128b4402S
 Keywords:

 Astrophysics  Earth and Planetary Astrophysics
 EPrint:
 Accepted for publication: Publications of the Astronomical Society of the Pacific. 35 pages, 14 Figures and 4 Tables