An Hα Imaging Survey of Galaxies in the Local 11Mpc Volume

Details An Hα Imaging Survey of Galaxies in the Local 11Mpc Volume An Hα Imaging Survey of Galaxies in the Local 11Mpc Volume

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.6005k&link_type=abstract

American Astronomical Society Meeting 205, #60.05; Bulletin of the American Astronomical Society, Vol. 36, p.1442

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We have completed an Hα and R-band imaging survey of a volume-limited sample of 340 spiral and irregular galaxies within a distance of 11Mpc. The goal of this survey is to characterize the demographics and star formation properties of nearby galaxies, with an emphasis on dwarf galaxies which dominate the sample population. The data also provide a foundation for follow-up studies of the HII region populations, star formation, chemical abundance, and ISM properties of the galaxy sample.
We describe the physical and completeness properties of the galaxy sample, and present representative images along with preliminary results from several analyses of the dataset. These include a multi-parametric study of the integrated star formation properties of the galaxies, and an investigation of the statistical importance of starbursts in dwarf galaxies.
The Hα imaging from this survey will be complemented by UV imaging through a recently approved GALEX Legacy program, which is described in a companion poster. The combined Hα and UV volume-complete dataset (11HUGS: 11Mpc Hα and Ultraviolet Galaxy Survey) will yield powerful constraints on the systematic errors in inferred star formation related quantities and further insights into the temporal behavior of star formation in low-mass galaxies.

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