NOAO >   Observing Info >   Approved Programs >   2011B-0387

Small NOAO Logo

Proposal Information for 2011B-0387


PI: Jean-Michel Desert, Harvard-Smithsonian CfA, jdesert@cfa.harvard.edu
Address: SSP, 60 Garden Street MS-16, Cambridge, MA 02138

CoI: Jacob Bean, Harvard-Smithsonian CfA
CoI: Jonathan Fortney, UCSC

Title: Searching for high altitude absorbers in the atmospheres of two hot Jupiter prototypes

Abstract: The characterization of hot Jupiter atmospheres is an important step for understanding the nature, diversity and origins of these objects. When observed in transmission in the blue part of the visible, hot Jupiter atmospheres can exhibit strong high altitude absorbers, haze traces and photochemical products. These processes are currently poorly understood and remain unconstrained, yet they drive the energy budget of these planets. We propose to have a better empirical knowledge of hot Jupiter atmospheric chemistry by extending the sample of observed objects in order to conduct comparative exoplanetology studies. We will measure the transmission spectrum of two prototypes of hot Jupiters, CoRoT-1b and Wasp-4b, in the blue optical to reveal the absorption strength of possible chemical features. We will observe the two planets during transits with Gemini-S/GMOS using a recently proved technique for obtaining space-telescope quality exoplanet transit spectroscopy from the ground. Our objective is to obtain the planet atmospheric compositions and to test the presence or absence of hazes. Furthermore, the combination of the proposed transmission spectrum measurements with optical and NIR transmisson and emission observations will provide strong constraints on the overall physical properties of these planets.


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



NOAO >   Observing Info >   Approved Programs >   2011B-0387

noaoprop-help@noao.edu

Small NOAO Logo