Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-01-11
Astrophys.J.660:850-857,2007
Astronomy and Astrophysics
Astrophysics
26 pages, 10 figures, 1 table. Accepted for publication in the Astrophysical Journal
Scientific paper
10.1086/512721
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 \rho= (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.
Díaz Rodrigo F.
Fernandez Jose Miguel
Gallardo Jose
Gieren Wolfgang
Ivanov Valentin Dimitrov
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