Work

Multicolor Observations of a Planetary Transit of HD 209458

Year: 2000

Type: article

Abstract: We present BVRIZ photometric observations of HD 209458 during the transit by its planetary companion on UT 1999 November 15 with the University of Hawaii 0.6 and 2.2 m telescopes and the High Altitude Observatory STARE telescope. The detailed shape of the transit curve is predicted to vary with color primarily as a result of 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 ☉ , and orbital inclination, i = 85 9 ± 0 5. The derived planetary radius favors evolutionary models in which the planet has a low albedo.

Source: The Astrophysical Journal

DOI: 10.1086/312869

Authors: Saurabh Jha, David Charbonneau, Peter M. Garnavich, Denis J. Sullivan, Tiri Sullivan, Timothy M. Brown, John L. Tonry

Institutions: Center for Astrophysics Harvard & Smithsonian, NSF National Center for Atmospheric Research, NSF NCAR High Altitude Observatory, University of Notre Dame, Victoria University of Wellington, University of Hawaiʻi at Mānoa, University of Hawaii System

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, National Aeronautics and Space Administration, Iowa State University

OpenAlex ID: W1976408546

FWCI: 5.515

Cites: 9

Cited by: 86

Related to: 10