The energetic molecular outflow near AFGL 961 - Millimeter-wave and infrared observations

Details The energetic molecular outflow near AFGL 961 - Millimeter-wave and infrared observations The energetic molecular outflow near AFGL 961 - Millimeter-wave and infrared observations

Publishing date

Oct 1982

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261..161l&link_type=abstract

Journals

Astrophysical Journal, Part 1, vol. 261, Oct. 1, 1982, p. 161-169. Research supported by the American Society for Engineering E

Science

Astronomy and Astrophysics

Field

Astrophysics

Additional info 2

63

Additional info 3

Infrared Spectra, Infrared Stars, Millimeter Waves, Molecular Clouds, Molecular Flow, Nebulae, Carbon Monoxide, Flow Velocity, H Lines, Radio Spectra, Stellar Evolution, Stellar Winds

Type

Scientific paper

Abstract

Sensitive millimeter-wave C-12O line observations and near-infrared hydrogen recombination line observations of AFGL 961 are reported and analyzed. The observations show that the high-velocity flow has a maximum extent of at least six arcmin or 1.9 pc at the distance of AFGL 961. The flow is anisotropic and the emission profiles are asymmetric in velocity. The mass of the gas involved in the flow is determined to be approximately 19 solar masses, and the kinetic energy of this gas is estimated to be about 8 x 10 to the 46th ergs. These observations are interpreted as evidence that an energetic bipolar outflow of molecular gas is occurring near AFGL 961. Comparison of infrared recombination line data, radio continuum, and CO observations shows that a strong, ionized, stellar wind would not be a sufficient force to drive the outflow. The effects of the outflow on the surrounding molecular cloud was also investigated.

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