Organic Molecules in Protoplanetary Disks

Details Organic Molecules in Protoplanetary Disks Organic Molecules in Protoplanetary Disks

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop...30g&link_type=abstract

NOAO Proposal ID #2008B-0030

Computer Science

Scientific paper

We propose to use NIRSPEC to search for organic molecules in circumstellar disks toward nearly edge-on T Tauri stars. The feasibility of this study has been recently illustrated by the NIRSPEC detection of HCN toward two edge-on T Tauri stars, GV Tau (Gibb et al. 2007) and IRS 46 (Lahuis et al. 2006), and Spitzer detections of C_2H_2, HCN, and CO_2 toward IRS 46 (Lahuis et al. 2006) and AA Tau (Carr & Najita 2008). We have selected 10 molecules that are predicted to be abundant based on chemical models, observations of high and low mass star forming regions, and comet comae. We will investigate compositional variations among the T Tauri population and compare that to comets and chemical models of disk chemistry. Through this, we can explore the chemistry occurring in the planet-forming regions of protoplanetary disks and investigate the evolution of organic volatiles, which can help establish the mechanism and timescale for planet formation.

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