Statistics – Computation
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...295..175c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 295, Aug. 1, 1985, p. 175-182.
Statistics
Computation
100
Late Stars, Stellar Mass Ejection, Stellar Models, Water Masers, Brightness Temperature, Computational Astrophysics, Molecular Energy Levels, Superhigh Frequencies
Scientific paper
It is pointed out that astronomical masers are found both in the early and late stages of stellar evolution. An understanding of the maser mechanisms involved can, therefore, possibly provide some insight into star births and deaths. Powerful maser radiation is emitted by the OH, H2O, and SiO molecules. Of the three molecules involved, the water molecule has received so far the least amount of theoretical scrutiny. For this reason, the present investigation is concerned with a new detailed study of water masers, taking into account the problem of water masers in late-type stars. Attention is given to molecular data, the employed model, the 22 GHz maser, the reliability of the collision rates, and a table with six masers involving levels with energies below 600 per cm.
Cooke Ben
Elitzur Moshe
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