Probing the Planet-Forming Region of T Tauri Stars in Chamaeleon

Details Probing the Planet-Forming Region of T Tauri Stars in Chamaeleon Probing the Planet-Forming Region of T Tauri Stars in Chamaeleon

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007noao.prop..460e&link_type=abstract

NOAO Proposal ID #2007A-0460

Physics

Scientific paper

By studying the inner, planet-forming regions of circumstellar disks around low-mass pre-main sequence stars we can refine theories of giant planet formation and develop timescales for the evolution of disks and their planets. Spitzer infrared observations of T Tauri stars in the Chamaeleon star-forming region have given us an unprecedented look at dust evolution in young objects. However, despite this ground breaking progress in studying the dust in young disks, the gas properties of the inner disk remain essentially unknown. Using the high-resolution of Phoenix, we propose to measure the 4.7 (micron) CO fundamental emission originating in the innermost disk regions of classical T Tauri stars in different stages of evolution with the objective of revealing the timescales of gas dissipation and its relationship to dust dissipation. With the combined results of Spitzer and Gemini, our theoretical analysis will unveil the state of the dust and gas in disks in which planets may already be forming and starting to open gaps.

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