Spectroscopy of H II Dwarf Galaxies in the Virgo Cluster

Details Spectroscopy of H II Dwarf Galaxies in the Virgo Cluster Spectroscopy of H II Dwarf Galaxies in the Virgo Cluster

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002rmxac..12..246v&link_type=abstract

Ionized Gaseous Nebulae, a Conference to Celebrate the 60th Birthdays of Silvia Torres-Peimbert and Manuel Peimbert, Mexico City

Astronomy and Astrophysics

Astronomy

1

Galaxies: Abundances, H Ii Regions

Scientific paper

A spectrophotometric study of a sample of dwarf H II galaxies located in the Virgo Cluster has been performed. Long-slit optical spectroscopy has been obtained for 25 blue dwarf galaxies selected across the Virgo central field with the aim of understanding the role played by the environment in the evolution of dwarf galaxies. This sample is a subset of a larger list of dwarf galaxies for which deep H alpha imaging has been collected. Chemical abundances have been derived for the sample using either a direct estimation of the electron temperature or empirical calibrations. Abundances obtained using different empirical calibrations have been compared. Preliminary results show abundances to be correlated with blue and near-infrared luminosity, total H I mass and color, with lower abundances associated with the fainter, gas-rich, bluer galaxies.

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