Water in dense molecular clouds

Details Water in dense molecular clouds Water in dense molecular clouds

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377..171w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 377, Aug. 10, 1991, p. 171-186.

Other

28

Abundance, Interstellar Matter, Late Stars, Molecular Clouds, Water Vapor, Airborne Equipment, Astronomical Observatories, Carbon Monoxide, Ground State, Water Masers

Scientific paper

The G.P. Kuiper Airborne Observatory (KAO) was used to make initial observations of the half-millimeter ground-state transition of water in seven giant molecular clouds and in two late-type stars. No significant detections were made, and the resulting upper limits are significantly below those expected from other, indirect observations and from several theoretical models. The implied interstellar H2O/CO abundance is less than 0.003 in the cores of three giant molecular clouds. This value is less than expected from cloud chemistry models and also than estimates based on HDO and H3O(+) observations.

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