Statistics – Computation
Scientific paper
Aug 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.189..129r&link_type=abstract
In ESA The Sci. Importance of Submillimetre Observations p 129-130 (SEE N83-22034 11-88)
Statistics
Computation
Brightness Temperature, Molecular Clouds, Orion Nebula, Statistical Analysis, Stellar Evolution, Submillimeter Waves, Water, Astronomy, Computation, Masers, Temperature Measurement
Scientific paper
Preliminary calculations employing statistical equilibrium techniques were carried out to determine brightness temperatures of water transitions occurring in the submillimeter band. The interesting candidates appear to be the 325 GHz, 380 GHz, and 448 GHz transitions, they are compared with the 183 GHz and 380 GHz transitions observed in the Orion Kleinmann-Low nebula and the combined results seem to be consistent with H2 densities of 100,000 -1 million cm-3 and a water column density of approximately 10 to 18th power. This implies a relative abundance of approximately 0.00001 which means that water may be about one twentieth of CO. In addition, it was found that for the conditions of the Orion plateau source, the 448 GHz line is expected to be a mild maser.
Kuiper Thomas B. H.
Rodriguez-Kuiper E. N.
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