Physics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..314n&link_type=abstract
In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 314-316 (SEE N91-
Physics
Dwarf Galaxies, Explosions, Gas Density, Mass, Photoionization, Residual Gas, Star Formation, Supernovae, Ejection, Gradients, Simulation
Scientific paper
The effects of the onset of star formation on the residual gas in primordial low-mass Local-Group dwarf spheroidal galaxies is studied by a series of hydrodynamical simulations. The models have concentrated on the effect of photoionization. The results indicate that photoionization in the presence of a moderate gas density gradient can eject most of the residual gas on a time scale of a few 10 to the 7th power years. High central gas density combined with inefficient star formation, however, may prevent mass ejection. The effect of supernova explosions is discussed briefly.
Bodenheimer Peter
Lin Doug N. C.
Noriega-Crespo Alberto
Tenorio-Tagle Guillermo
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