Submillimeter water masers at 321 and 325 GHz

Details Submillimeter water masers at 321 and 325 GHz Submillimeter water masers at 321 and 325 GHz

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990liaco..29..243m&link_type=abstract

In ESA, From Ground-Based to Space-Borne Sub-mm Astronomy p 243-247 (SEE N91-21986 13-89)

Astronomy and Astrophysics

Astronomy

Interstellar Matter, Line Spectra, Spectral Emission, Star Formation, Stellar Envelopes, Submillimeter Waves, Water Masers, Water Vapor, Early Stars, Late Stars, Spectrum Analysis

Scientific paper

Astronomical observations of the (10 sub 29) to (9 sub 36) and (5 sub 15) to (4 sub 22) transitions of water vapor at frequencies near 321 and 325 GHz respectively are reported. Using the Caltech Submillimeter Observatory the (10 sub 29) to (9 sub 36) line is detected toward six star forming regions and eleven late type stars. The (5 sub 15) to (4 sub 22) line is detected toward four star forming regions. In all cases, most likely maser action is observed. Toward some sources a complicated spectrum with high velocity emission features is observed in the 325 GHz transition. Emission in the high excitation 321 GHz line is mostly found at velocities near the systematic velocities of the regions studied.

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