Millimagnitude photometry for transiting extrasolar planetary candidates. III. Accurate radius and period for OGLE-TR-111-b1

Dante Minniti, José Miguel Fernández, Rodrigo F. Díaz, Andrzej Udalski, Grzegorz Pietrzynski, Wolfgang Gieren, Patricio Rojo, María Teresa Ruíz, Manuela Zoccali

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

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 us to refine the planetary radius, obtaining R p = 1.01 ± 0.06 RJ. Given the mass of Mp = 0.53 MJ previously measured from radial velocities, we confirm that the density is ρp = 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.

Original languageEnglish
Pages (from-to)858-862
Number of pages5
JournalAstrophysical Journal
Volume660
Issue number1 I
DOIs
Publication statusPublished - 1 May 2007

Keywords

  • Planetary systems
  • Stars: individual (OGLE-TR-111)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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