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Nebular metallicities in isolated dwarf irregular galaxies

Nicholls, David Conway

Description

The motive for this work was to investigate whether small, isolated gas-rich galaxies show evidence of chemical evolution, by studying their nebular metallicities. I have identified a sample of 83 objects chosen for low luminosity and mass, the presence of active star formation, and isolation from other galaxies and galaxy clusters that might generate tidal effects or enrich the intergalactic medium. From these I have measured the spectra of 35 objects, using theWiFeS IFU spectrograph on...[Show more]

CollectionsOpen Access Theses
Date published: 2014-07-30
Type: Thesis (PhD)
URI: http://hdl.handle.net/1885/11923

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