Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...213..295v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 213, no. 1-2, April 1989, p. 295-298.
Astronomy and Astrophysics
Astrophysics
Carbon, H Ii Regions, Interstellar Chemistry, Molecular Clouds, Silicon, Astronomical Spectroscopy, Atomic Recombination
Scientific paper
A method is described for the physical analysis of S II layers in molecular cloud edges using only one sulfur recombination line and two recently derived statistical relationships for S II layers known to be applicable to all known S II layers. The method was applied to analyze S II layers in the following molecular cloud edges with one sulfur line known: NGC 3576, NGC 6334, S 87, and S 88. As found elsewhere in 10 other S II layers, the S II layers studied show that the microturbulent velocity is roughly equal to a value between a S II layer and its associated nearby C II layer in the same cloud, and the electron temperature in the S II layer is about 40 percent lower than in its associated nearby C II layer.
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