NOAO >   Observing Info >   Approved Programs >   2013B-0266

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Proposal Information for 2013B-0266


PI: Ernst de Mooij, University of Toronto, demooij@astro.utoronto.ca
Address: Department of Astronomy & Astrophysics, 50 St. George Street, Toronto, ON M5S 3H4, Canada

CoI: Sebastian Daemgen, University of Toronto
CoI: Remco de Kok, SRON Utrecht
CoI: Matteo Brogi, Leiden Observatory
CoI: Ray Jayawardhana, University of Toronto
CoI: Simon Albrecht, MIT
CoI: Ignas Snellen, Leiden Observatory
CoI: Jayne Birkby, Leiden Observatory
CoI: Henriette schwarz, Leiden Observatory
CoI: Emanuele di Gloria, Leiden Observatory
CoI: Ari Silburt, University of Toronto

Title: Catching a speeding exoplanet: TiO lines in the atmosphere of the extremely hot Jupiter WASP-33b

Abstract: With an effective temperature of almost 3300K, WASP-33b is one of the hottest planet's known to date. Due to this high temperature, comparable to that of an M5V star, TiO is expected to be in the gas- phase. TiO has been suggested as a potential cause for inversion layers in hot Jupiter atmospheres. Since TiO has many absorption lines at optical wavelengths, the transmission spectrum of WASP-33b should be strongly modulated by hundreds of TiO lines. Here we propose to observe WASP-33b's transit at high spectral resolution, using a technique that has been successfully demonstrated in the NIR to detect other molecules in hot Jupiters atmosphere. The technique uses a cross-correlation between the spectra and models to combine all the lines in the wavelength-range, thereby increasing the signal-to-noise ratio and allowing a unambiguous detection of the targeted molecules. This method also allows us to measure the \it planet's radial velocity, and potentially winds blowing from the day-side to the night-side. Note that these observations will provide the first unambiguous detection of TiO in an exoplanet atmosphere.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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