Abstract

RAMON-FOX, F. G.  and  SADA, P. V.. Parameters of recent transits of HAT-P-23b. Rev. mex. astron. astrofis [online]. 2013, vol.49, n.1, pp.71-77. ISSN 0185-1101.

Four transits of the exoplanet HAT-P-23b were recently observed with the 0.36 m telescope at the Universidad de Monterrey Observatory. The four light curves were successfully combined to obtain a resulting one with reduced scattering per bin. This curve was modeled using a Monte Carlo method to obtain the essential parameters that characterize the system. Assuming orbital parameters such as eccentricity e and longitude of periastron ω from the discovery paper, we found values of Rp/R_* = 0.1105 ^+0.0015 _-0.0013 the planet-to-star radius ratio, a/R_* = 4.23 ^+0.06 _-0.12 the scaled semimajor axis, and an orbital inclination of the system of i = 87.9° ^+1.5_-2.2. We also derive an improved orbital period of 1.2128868 ±0.0000004 days (T_o = 2,454, 852.26542 ± 0.00018 BJD_TDB) for the system.

Keywords : planets and satellites [detection]; stars [individual (GSC 1632-01396)].

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