Masses and energetics of high-velocity molecular outflows

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Flow Velocity, Kinetic Energy, Mass Distribution, Mass Flow, Molecular Flow, Momentum Theory, Carbon Monoxide, Emission Spectra, High Speed, Molecular Rotation

Scientific paper

In connection with the huge masses and energies involved in high-velocity molecular outflows, such flows must have important implications for the processes of star formation and molecular cloud evolution. With the objective to obtain self-consistent mass estimates for a number of flow sources, spectral line observations have been conducted, taking into account six sources of both (C-12)0 and (C-13)0 in the two lowest rotational transitions. All data presented were obtained with the aid of the 11 m and 12 m NRAO antennas at Kitt Peak using the cooled, dual-channel Cassegrain receiver. The reported investigation shows that very reliable mass determinations can be made for the considered molecular outflows, although uncertainties exist in the determination of the column density fo low-velocity gas in molecular outflows and the projected area of these outflows.

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