The neutral carbon distribution in a bipolar outflow/molecular disc source configuration - G35.2-0.74N

Details The neutral carbon distribution in a bipolar outflow/molecular disc source configuration - G35.2-0.74N The neutral carbon distribution in a bipolar outflow/molecular disc source configuration - G35.2-0.74N

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.294..105l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 294, p. 105

Astronomy and Astrophysics

Astronomy

7

Molecular Clouds, Carbon Monoxide, Carbon, Interstellar Matter, Outgassing, Molecular Gases, Emission Spectra, Maps, Line Spectra, Carbon Isotopes, Jet Flow, Forbidden Transitions, Disks (Shapes), Far Ultraviolet Radiation, Shock Waves

Scientific paper

Maps are presented of 3P1-3P0 forbidden C I and J=2-1 CO-18 line emission from the interstellar molecular cloud G35.2-0.74N. The maps are interpreted with reference to a previous model for the structure of the cloud in which opposing jets from a central object, embedded in a rotating interstellar disk, precess and drive a bipolar molecular outflow. The CO-18 emission traces the rotating interstellar disk, but the forbidden C I emission shows several features. An unresolved component is observed which probably results from dissociation of CO in the center of the disk by UV radiation from the central source. Background forbidden C I emission is also observed which shares the rotation of the disk on larger scales. The C I/CO ratio in these components is typically a few percent. High-velocity forbidden C I emission, where C I/CO is high, is observed between the CO molecular outflow and the cavity exacavated by the jet. This material has probably been accelerated by the jet but dissociated by far-UV radiation propagating through the cavity. The C I/CO ratio falls as the shocked outflow later sweeps up CO.

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