CO J = 3-2 observations of molecular line sources having high-velocity wings

Details CO J = 3-2 observations of molecular line sources having high-velocity wings CO J = 3-2 observations of molecular line sources having high-velocity wings

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290..637r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 290, March 15, 1985, p. 637-652.

Astronomy and Astrophysics

Astronomy

39

Carbon Monoxide, Interstellar Gas, Molecular Clouds, Radio Sources (Astronomy), Electron Transitions, Gravitational Collapse, Line Spectra, Radio Spectra

Scientific paper

Twelve molecular line sources which exhibit high-velocity wings in the CO J = 1-0 rotational transition have been observed in the CO J = 3-2 line. The densities derived using observations of the transition in combination with the lower lines can be considerably higher than those derived purely from mapping the CO J = 1-0 transition, in some cases by over an order of magnitude. This general conclusion tends to increase the likelihood that the outflows are capable of supporting clouds against free-fall gravitational collapse. Low values of apparent CO fractional abundance per unit velocity gradient are derived, which may be due to a depletion of CO in the outflow regions or alternatively, to clumping of the outflowing molecular gas.

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