AAS 205th Meeting, 9-13 January 2005
Session 17 Ae Be and Debris Disks: Searches Lead to High Angular Resolution Studies
Poster, Monday, January 10, 2005, 9:20am-6:30pm, Exhibit Hall

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[17.18] Planetary Environment Study at Sub-milliarcsecond Resolution

D. Ragozzine (CfA & Caltech), M. Karovska, L. Hartmann, D. Sasselov (CfA), K. Carpenter (GSFC), SI Team

The Stellar Imager (SI; http://hires.gsfc.nasa.gov/~si ) is a NASA Vision Mission, conceived of as a space-based UV-Optical long-baseline interferometer that will provide sub-milliarcsecond imaging capabilities. We present results from our study of how SI could be used to answer key questions about planet formation and planet-star-disk interactions. SI would be able to resolve and characterize star-disk interactions at a few stellar radii, including accretion and inner disk edge heating. Simple models of T-Tauri stars are used to probe SI's sensitivity to various critical parameters and geometries. By observing H2-flourescent lines in the UV, the contrast between the luminosity of the star and the gas can be improved. A list of potential targets among known planet-harboring stars is also presented with the hope of resolving possible star-planet interactions.

Acknowledgement: This work was supported by the SI Vision Mission study grant NNG04GM92G from NASA/GSFC to SAO. MK is a member of the Chandra X-ray Center (NASA contract NAS8-39073).

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.