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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
; | | Date: |
11 Jan 2007 | | 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
ho= (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. | | Source: | arXiv, astro-ph/0701345 | | Services: | Forum | Review | PDF | Favorites | |
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