The color signature of the transit of HD 209458: Discrepancies between stellar atmospheric models and observations

Abstract

Exoplanetary transits produce a double-horned color signature that is distinct from both binaries and blends and can thus be used to separate exoplanets from false positives in transit searches. Color photometry with precision sufficient to detect this signal in transits of HD 209458 is available in the literature. Analysis of these observations reveals that, while the signature does exhibit the expected shape, it is significantly stronger than PHOENIX atmospheric models predict.

arXiv comment4 pages, 3 figures, accepted to A&A

References in corpus (11)

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Cited by in corpus (5)

• Homogeneous studies of transiting extrasolar planets. I. Light curve analyses
• Using Stellar Limb-Darkening to Refine the Properties of HD 209458b
• The GTC exoplanet transit spectroscopy survey I: OSIRIS transmission spectroscopy of the short period planet WASP-43b
• Kepler and Ground-based Transits of the Exo-Neptune HAT-P-11b
• APOSTLE: Eleven Transit Observations of TrES-3b