Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...285..813f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 285, Oct. 15, 1984, p. 813-817. NASA-supported research.
Astronomy and Astrophysics
Astrophysics
54
Hot Stars, Milky Way Galaxy, Star Clusters, Star Distribution, Stellar Evolution, Supermassive Stars, B Stars, Energy Transfer, Metallicity, Molecular Clouds, Momentum Transfer, O Stars, Star Formation Rate, Stellar Winds, Supernovae
Scientific paper
It is proposed that the energy and momentum injected from OB associations can act as the regulators of high-mass star formation throughout the disk of a spiral galaxy. The mechanism, interacting blast waves driven by supernovae and stellar winds, leads to a generalized Schmidt law for the star formation rate and could explain in a natural way the galactic gradients of metals and star formation rate. The formation of massive stars is determined by the average ambient density in the disk while low-mass star formation is regulated by the density in molecular clouds. That is, there are two modes of star formation, but the physical mechanism is the same in both cases.
Franco Jose
Shore Steve N.
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