Atomic and molecular outflow in DR 21

Details Atomic and molecular outflow in DR 21 Atomic and molecular outflow in DR 21

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...387..219r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 387, March 1, 1992, p. 219-228.

Astronomy and Astrophysics

Astrophysics

33

Interstellar Matter, Molecular Clouds, Molecular Flow, Radio Emission, Hydrogen Atoms, Jet Flow, Red Shift, Very Large Array (Vla)

Scientific paper

Observations of the 21 cm H exp 0 line and of the J = 3-2 transition of HCO(+) in DR 21 are presented. The H exp 0 observations reveal a massive (24 solar-mass) jet which is redshifted by up to 90 km/s, with peak H exp 0 column density of 2 x 10 exp 21/sq cm. This jet is three orders of magnitude more massive than the H exp 0 wind seen in HH 7-11, and is capable of driving the molecular outflow in DR 21 in a momentum conserving interaction. A model is presented in which the H exp 0 jet is formed by recombination of an initially ionized outflow from DR 21.

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