Analysis of Optical Imaging from the Local Volume Legacy Survey

Details Analysis of Optical Imaging from the Local Volume Legacy Survey Analysis of Optical Imaging from the Local Volume Legacy Survey

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545712f&link_type=abstract

American Astronomical Society, AAS Meeting #215, #457.12; Bulletin of the American Astronomical Society, Vol. 42, p.481

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Scientific paper

We report the results of Halpha and broadband optical imaging of 96 galaxies in the Local Volume Legacy Survey (LVL). The majority of galaxies in the volume limited (D < 11 Mpc) parent sample are low luminosity dwarf galaxies. We examine optical colors, star formation rates, and Halpha equivalent widths both as global values and as a function of radius. As expected, the majority of galaxies in this sample have blue colors and modest star formation activity. While the majority of galaxies have negligible color gradients in their stellar disks, a handful of galaxies have strong red color gradients (greater than 0.4 mag/kpc in U-B). These galaxies tend to be smaller and more compact than other galaxies in the sample with comparable luminosities and are likely starbursting or post-burst systems.

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