Evolution of Extreme Gas-Rich Galaxies

Details Evolution of Extreme Gas-Rich Galaxies Evolution of Extreme Gas-Rich Galaxies

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003noao.prop..334k&link_type=abstract

NOAO Proposal ID #2003A-0334

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Scientific paper

We propose to acquire UBVRI images of two extremely gas rich dwarf galaxies in the Centaurus A group discovered in the HIPASS survey. These galaxies have at least 5 times more gas than stars, by mass. Although their HI densities appear high enough to trigger star formation, their star formation rates appear to be severely suppressed. Our prime goal is to use integrated colours to estimate mean ages for their stellar populations and star formation histories, and compare them with each other and dwarfs within the Local Group.

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