Characterizing a Newly-Found Extrasolar Planet
Abstract
We propose to observe transits of the newly-discovered extrasolar planet TRES-1 using {1} ACS/HRC to obtain precise time-series photometry of the transit, and {2} NICMOS to measure the strength of water vapor absorption in the planetary atmosphere. The visible light curve will permit an accurate estimate of the planet's diameter by resolving uncertainty concerning the diameter of the parent star, and the water vapor observation can be used to test models of the structure, clouds and composition in the planet's upper atmosphere.
- Publication:
-
HST Proposal
- Pub Date:
- July 2004
- Bibcode:
- 2004hst..prop10441B