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A surface brightness-metallicity relation for dwarf galaxies - The effect of density thresholds for star formation?

Phillipps, S., Edmunds, Michael Geoffrey and Davies, Jonathan Ivor 1990. A surface brightness-metallicity relation for dwarf galaxies - The effect of density thresholds for star formation? Monthly Notices of the Royal Astronomical Society 244 (1) , pp. 168-172.

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Abstract

It is well known that dwarf galaxies exhibit a luminosity (or mass)-metallicity relation. However, since dwarfs also display a surface brightness-luminosity relation (whether real or due to selection effects), the relationship can be alternatively considered to be between metallicity and surface brightness. Such a relationship is shown to be easily produced if there is a gas density threshold below which massive star formation is cut off. The stellar metallicity distributions for two simple models incorporating such a cut-off are calculated.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: brightness distribution, density distribution, dwarf galaxies, metallicity, star formation, carbon stars, chemical evolution, globular clusters, luminosity, virgo galactic cluster
Publisher: Wiley
ISSN: 0035-8711
Last Modified: 04 Jun 2017 04:27
URI: http://orca.cf.ac.uk/id/eprint/39205

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