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Tricarbon monoxide in TMC-1

DOI

56

Citations

0

References

1985

Year

R. D. Brown, P. D. Godfrey, D. M. Cragg, E. H. N. Rice, William M. Irvine, Per Friberg, Hiroyuki Suzuki, Masatoshi Ohishi, Norio Kaifu, M. Morimoto
The Astrophysical Journal

Abstract

We report the measurement of three new lines of C3O in TMC-1. The observed peak antenna temperatures, appropriately corrected for atmospheric and telescope losses, are found to be consistent with a large velocity gradient radiative transfer model whose parameters span the range of standard values for this cloud. The derived fractional abundance for C3O is 1.4 x 10(-10), comparable with the results predicted from a model calculation based on a gas-phase ion-molecule reaction scheme. The results of negative searches for C3O in six other sources are not inconsistent with expected conditions in these clouds.