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25 January 2025

» arxiv » astro-ph/0701356

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Millimagnitude Photometry for Transiting Extrasolar Planetary Candidates III: Accurate Radius and Period for OGLE-TR-111-b
Dante Minniti ; José Miguel Fernández ; Rodrigo F. Díaz ; Andrzej Udalski ; Grzegorz Pietrzynski ; Wolfgang Gieren ; Patricio Rojo ; María Teresa Ruíz ; Manuela Zoccali ;
Date:	12 Jan 2007
Abstract:	We present accurate V-band photometry for a planetary transit of OGLE-TR-111 acquired with VIMOS at the ESO Very Large Telescope. The measurement of this transit allows to refine the planetary radius, obtaining R_p= 1.01 +/- 0.06 R_J. Given the mass of M_p = 0.53 M_J previously measured from radial velocities, we confirm that the density is rho_p= 0.6 +/- 0.2 g/cm^3. We also revise the ephemeris for OGLE-TR-111-b, obtaining an accurate orbital period P= 4.014484 +/- 0.000014 days, and predicting that the next observable transits would occur around December 2006, and after that only in mid-2008. Even though this period is different from previously published values, we cannot yet rule out a constant period.
Source:	arXiv, astro-ph/0701356
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