Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20916704a&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #167.04; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We present an investigation of the kinematic properties of twenty-eight dwarf irregular galaxies using spatially resolved neutral hydrogen maps from the Very Large Array. We explore several scaling relations, including both the classical and baryonic Tully-Fisher relations, mass relations, and metallicity-luminosity relations and offer comparisons to gas rich late-type spirals. In addition, we examine correlations between dark and luminous matter (stellar and gaseous) for the dwarf irregular galaxies with both optical and neutral hydrogen images. While it is known that dwarf irregular galaxies fall off the classical Tully-Fisher relation, further support is offered for the baryonic Tully-Fisher relation being the underlying relation for both spiral and dwarf irregular galaxies. We discuss these results in the context of downsizing and galaxy evolution.
Adams Elizabeth A.
van Zee Liese
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