Statistics – Computation
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...237..345c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 237, no. 2, Oct. 1990, p. 345-353.
Statistics
Computation
7
Computational Astrophysics, Disk Galaxies, Galactic Evolution, Star Formation, Stochastic Processes, Astronomical Models, Interacting Galaxies, Interstellar Gas, Spiral Galaxies
Scientific paper
Star-formation activity is studied in three-dimensional stochastic self-propagating star formation (SSPSF) models of disk galaxies in order to determine the change in star formation rates associated with environmental interactions. These include the interactions between galaxies, the stripping of a galaxy by the intracluster medium, and gas enrichment. During each run, distinct morphologies are observed which depend primarily on the maximum probability of stimulated star formation and the gas relaxation time. It is found that the rate of star formation in a galaxy with changing interstellar gas densities depends significantly on the sense of the change. The results are largely independent of the specific SSPSF model used. A theoretical explanation for this phenomenon is presented, and its implications for galactic classification are discussed.
Comins Neil F.
Shore Steve N.
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