Selective loss of metals from low-mass galaxies

Details Selective loss of metals from low-mass galaxies Selective loss of metals from low-mass galaxies

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356l..15d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 356, June 10, 1990, p. L15-L19.

Astronomy and Astrophysics

Astrophysics

86

Disk Galaxies, Galactic Mass, Interstellar Matter, Stellar Mass Ejection, Supernova Remnants, Abundance, H Ii Regions, Irregular Galaxies, Metallicity

Scientific paper

The fate of metals produced by type II supernovae occurring at time intervals of order 1 Myr in a low-mass gas-rich disk galaxy have been studied via a numerical model. Two-dimensional hydrodynamic simulations were made for a typical stellar OB association located near the center of a model disk galaxy with a mass of 1.4 x 10 to the 9th solar mass. Consistent with earlier studies, multiple SN led first to the production of a supershell and later to a galactic chimney which channels SN debris out from the disk. Chimney development is aided by the low metallicity (Z = 0.1 solar Z) of the model, which depresses cooling rates.

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