Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237..461n&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 15, 1989, p. 461-477. Research supported by
Astronomy and Astrophysics
Astronomy
10
Dwarf Galaxies, Galactic Evolution, Photoionization, Star Formation, Stellar Systems, Chemical Composition, Cosmochemistry, Local Group (Astronomy), Solar Neighborhood, Supernova Remnants
Scientific paper
Numerical hydrodynamical calculations are used to study the effects of the onset of star formation on the residual gas in a primordial low-mass Local-Group dwarf spheroidal galaxy in the size range 0.3-1.0 kpc. It is demonstrated that photoionization in the presence of a moderate gas-density gradient can be responsible for gas ejection on a time-scale of a few times 10 to the 7th yr. The results indicate that, given a normal initial mass function, many protodwarf galaxies may have been dispersed by the onset of star formation.
Bodenheimer Peter
Lin Doug N. C.
Noriega-Crespo Alberto
Tenorio-Tagle Guillermo
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