Multicolor Observations of a Planetary Transit of HD 209458

Abstract

We present B, V, R, I and Z-band photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6m and 2.2m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color due primarily to the color-dependent limb-darkening of the star, but potentially due as well to the effect of color-dependent opacity in the planetary atmosphere. We model the light curves and present refined values for the transit timing and orbital period, useful for planning future observations of the planetary transit. We also derive significantly improved measurements of the planetary radius, R_p = 1.55 +/- 0.10 R_Jup, stellar radius, R_s = 1.27 +/- 0.05 R_Sun, and orbital inclination, i = 85.9 +/- 0.5 deg. The derived planetary radius favors evolutionary models in which the planet has a low albedo.

6 pages, 3 figures, accepted for publication in ApJ Letters

References in corpus (4)

• Detection of Planetary Transits Across a Sun-like Star
• Theoretical Transmission Spectra During Extrasolar Giant Planet Transits
• The Spectroscopic Orbit of the Planetary Companion Transiting HD209458
• On the Radii of Close-in Giant Planets

Cited by in corpus (29)

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• The Theory of Brown Dwarfs and Extrasolar Giant Planets
• HST Time-Series Photometry of the Transiting Planet of HD 209458
• Transmission Spectra as Diagnostics of Extrasolar Giant Planet Atmospheres
• GROND - a 7-channel imager
• Using Stellar Limb-Darkening to Refine the Properties of HD 209458b
• A Transiting Planet of a Sun-like Star
• First Results from the Anglo-Australian Planet Search - A Brown Dwarf Candidate and a 51 Peg-like Planet
• HD 209458: Physical Parameters of the Parent Star and the Transiting Planet
• The Transit Light Curve Project. III. Tres Transits of TrES-1
• Characterizing the Orbital Eccentricities of Transiting Extrasolar Planets with Photometric Observations
• Multiwavelength flux variations induced by stellar magnetic activity: effects on planetary transits
• System Parameters of the Transiting Extrasolar Planet HD 209458b
• "Weather" Variability Of Close-in Extrasolar Giant Planets
• Subaru HDS Transmission Spectroscopy of the Transiting Extrasolar Planet HD 209458b
• Atmospheric Lensing and Oblateness Effects During an Extrasolar Planetary Transit
• Study by MOA of extra-solar planets in gravitational microlensing events of high magnification
• Tidal interactions of close-in extrasolar planets: the OGLE cases
• Applications of Microlensing to Stellar Astrophysics
• Pushing the Limits of Ground-Based Photometric Precision -- Sub-Millimagnitude Time-Series Photometry of the Open Cluster NGC 6791
• Measuring Stellar Limb Darkening by Gravitational Microlensing
• WASP-4b Transit Observations With GROND
• Model-Independent Stellar and Planetary Masses from Multi-Transiting Exoplanetary Systems
• Spatially resolved spectroscopy across stellar surfaces. II. High-resolution spectra across HD209458 (G0V)
• Using near infra-red spectroscopy for characterization of transiting exoplanets
• Multi-band characterization of the hot Jupiters: WASP-5b, WASP-44b and WASP-46b
• The benefit of simultaneous seven-filter imaging: 10 years of GROND observations
• Science Commissioning of NIHTS: The Near-infrared High Throughput Spectrograph on the Lowell Discovery Telescope
• The color signature of the transit of HD 209458: Discrepancies between stellar atmospheric models and observations