Observational Properties of Globular Clusters in Dwarf Galaxies

Details Observational Properties of Globular Clusters in Dwarf Galaxies Observational Properties of Globular Clusters in Dwarf Galaxies

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011eas....48..237s&link_type=abstract

EAS Publications Series, Volume 48, 2011, pp.237-241

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Scientific paper

We analyse evolutionary parameters of globular clusters in dwarf galaxies obtained in our medium-resolution spectroscopic observations, and their connection with the properties of the host galaxies. We find that 1) the metallicity spread in globular cluster systems is wider for larger galaxies; 2) metal-rich clusters are young and preferentially found in galaxies more massive than ˜109M&sun;; 3) intermediate-age globular clusters in early-type dwarf galaxies are richer in metals than star clusters representing dynamically cold gas-rich environments in dwarf irregulars; 4) the age-metallicity relation is special for each galaxy, and depends not only on its mass, but also on some other factors, probably environmental conditions.

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