Exploring Optically Compact Dwarf Galaxies for Kinematic Structures and Extended HI Halos

Details Exploring Optically Compact Dwarf Galaxies for Kinematic Structures and Extended HI Halos Exploring Optically Compact Dwarf Galaxies for Kinematic Structures and Extended HI Halos

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924407m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #244.07

Astronomy and Astrophysics

Astronomy

Scientific paper

We present Very Large Array H I spectral line and optical imaging of eight optically compact (optical radii <1 kpc), star-forming dwarf galaxies. These galaxies were chosen because of their optically compact stellar distributions, faint blue magnitudes, ongoing star formation, and relative proximity. The sample includes ADBS 113845+2008, which was found to have an HI halo that extends nearly 40 optical scale lengths from the stellar body (Cannon et al. 2009). Using this larger sample, we are working to discern if the "giant gas disk" dwarf galaxy is common or rare. We are also exploring the kinematics and dark matter contents of each of the sample galaxies.

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