Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...186..287t&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 186, no. 1-2, Nov. 1987, p. 287-294. NASA-sponsored research.
Astronomy and Astrophysics
Astrophysics
51
Galactic Rotation, Molecular Clouds, Supernova Remnants, B Stars, Galactic Evolution, O Stars, Star Formation, Stellar Evolution, Temporal Distribution
Scientific paper
The evolution of remnants produced by the total supernova power from an evolved OB association in a differentially rotating galactic disk is presented. The calculations at 5 kpc and 10 kpc from the galactic center lead to column densities across the remnant shell, or across sections of the remnants, which eventually exceed the opacity criterion Nopacity = 1021Z_sun;/Z cm-2 (Franco and Cox, 1986) and thus form molecular clouds. The resultant clouds have masses larger than 105M_sun;, dimensions of several hundred parsecs and a separation larger than 1 kpc. In contrast, at 20 kpc from the galactic center the opacity criterion is never fulfilled.
Palous Jan
Tenorio-Tagle Guillermo
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