Transits and secondary eclipses of HD 189733 with Spitzer

Abstract

We present limits on transit timing variations and secondary eclipse depth variations at 8 microns with the Spitzer Space Telescope IRAC camera. Due to the weak limb darkening in the infrared and uninterrupted observing, Spitzer provides the highest accuracy transit times for this bright system, in principle providing sensitivity to secondary planets of Mars mass in resonant orbits. Finally, the transit data provides tighter constraints on the wavelength- dependent atmospheric absorption by the planet.

7 pages, 7 figures, submitted to proceedings of IAU Symposium No. 253 "Transiting Planets"

References in corpus (11)

• DHP Framework: Digital Health Passports Using Blockchain -- Use case on international tourism during the COVID-19 pandemic
• On detecting terrestrial planets with timing of giant planet transits
• A map of the day-night contrast of the extrasolar planet HD 189733b
• Detection of atmospheric haze on an extrasolar planet: The 0.55 - 1.05 micron transmission spectrum of HD189733b with the Hubble Space Telescope
• Orbital perturbations on transiting planets: A possible method to measure stellar quadrupoles and to detect Earth-mass planets
• Hubble Space Telescope times-series photometry of the planetary transit of HD189733: no moon, no rings, starspots
• The Transit Light Curve Project. V. System Parameters and Stellar Rotation Period of HD 189733
• Formation of Earth-like Planets During and After Giant Planet Migration
• Using long-term transit timing to detect terrestrial planets
• Primary transit of the planet HD189733b at 3.6 and 5.8 microns
• Hot Jupiter Variability in Eclipse Depth

Cited by in corpus (7)

• Search for Carbon Monoxide in the atmosphere of the Transiting Exoplanet HD189733b
• Water in HD 209458b's atmosphere from 3.6 - 8 microns IRAC photometric observations in primary transit
• Reassessing the Evidence for Time Variability in the Atmosphere of the Exoplanet HAT-P-7 b
• Galactic planetary science
• A New Atmospheric Model for HD 189733 b
• The Transits of Extrasolar Planets with Moons
• The search for exomoons and the characterization of exoplanet atmospheres