Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..395v&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 9, July-Aug. 1983, p. 395-400) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, July-
Astronomy and Astrophysics
Astronomy
4
Andromeda Galaxy, Electrophotometry, Globular Clusters, Ubv Spectra, Stellar Spectrophotometry
Scientific paper
A new pumping mechanism is proposed for the strong H2O masers associated with star-forming regions. This mechanism is based on the two following phenomena: (1) superthermal excitation of H2 molecules as a result of the relaxation time difference in the post-shock cooling, and (2) the quasi-resonance transfer of superthermal excitation in collision of H2 + H2O. The necessary conditions and efficiency of this pumping mechanism are estimated.
Chandra Sharat
Kegel Willem K.
Varshalovich Dmitry A.
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