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Millimagnitude Photometry for Transiting Extrasolar Planetary Candidates: II. Transits of OGLE-TR-113-b in the Optical and Near-IR

Rodrigo F. Díaz·Sebastián Ramírez·José Miguel Fernández·José Gallardo·Wolfgang Gieren·Valentin D. Ivanov·Pablo Mauas·Dante Minniti·Grzegorz Pietrzynski·Felipe Pérez·María Teresa Ruíz·Andrzej Udalski·Manuela Zoccali
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Abstract

We present precise V and Ks-band transit photometry for the planetary host star OGLE-TR-113. Using the Ks-band photometry, we confirm the dwarf nature of OGLE-TR-113, and obtain new estimates for its effective temperature, distance and reddening. We employ the V-band photometry to obtain planetary and orbit parameters from the transit fit, a= (0.0232 \pm 0.0038) AU, orbital period P= (1.4324752 \pm 0.0000015) days, i= 86.7 - 90, R_p= (1.09 \pm 0.09) R_J. These values are in excellent agreement with previous works. Assuming a mass M_p= (1.32 \pm 0.19) M_J for the planet we obtain its mean density ρ= (1.26 \pm 0.50) g cm^{-3}, also in agreement with previous works. The transit observed in the Ks-band has a larger scatter and we find its amplitude to be consistent with that in the V-band. In this way, we find an independent confirmation of the planetary nature of OGLE-TR-113b.

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Rodrigo F. Díaz, Sebastián Ramírez, José Miguel Fernández, José Gallardo, Wolfgang Gieren, Valentin D. Ivanov, Pablo Mauas, Dante Minniti, Grzegorz Pietrzynski, Felipe Pérez, María Teresa Ruíz, Andrzej Udalski, Manuela Zoccali. 2007-01-11. Millimagnitude Photometry for Transiting Extrasolar Planetary Candidates: II. Transits of OGLE-TR-113-b in the Optical and Near-IR. https://doi.org/10.1086/512721

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