Warm Hcn, C2h2, and Co in the Disk of Gv Tau
نویسندگان
چکیده
We present the first high-resolution, ground-based observations of HCN and C2H2 toward the T Tauri binary star system GV Tau. We detected strong absorption due to HCN 3 and weak C2H2 [ 3 and 2 þ ( 4 þ 5)0þ] absorption toward the primary (GV Tau S) but not the infrared companion. We also report CO column densities and rotational temperatures, and present abundances relative to CO of HCN/CO 0:6% and C2H/CO 1:2% and an upper limit for CH4/CO < 0:37% toward GV Tau S. Neither HCN nor C2H2 were detected toward the infrared companion, and results suggest that abundances may differ between the two sources. Subject headings: infrared: ISM — ISM: abundances — ISM:molecules — planetary systems: protoplanetary disks
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