Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341801d&link_type=abstract
American Astronomical Society, AAS Meeting #213, #418.01; Bulletin of the American Astronomical Society, Vol. 41, p.230
Astronomy and Astrophysics
Astronomy
Scientific paper
Near-, mid-, and far-infrared flux properties are presented for the Local Volume Legacy survey, a Spitzer Space Telescope legacy program built upon a foundation of GALEX ultraviolet and ground-based Hα imaging of 258 galaxies within 11 Mpc. The Local Volume Legacy survey covers an unbiased, representative, and statistically robust sample of nearby star-forming galaxies, exploiting the faintest absolute depth and highest extragalactic spatial resolution achievable with Spitzer. As a result of its approximately volume-limited nature, LVL augments previous Spitzer observations of present-day galaxies (such as from SINGS, the Spitzer Infrared Nearby Galaxies Survey) with improved sampling of the low-luminosity dwarf galaxy population. LVL's unique sample selection results in a large spread in mid-infrared colors, likely due to the conspicuous deficiency of PAH emission from low-metallicity galaxies. Conversely, the LVL sample shows a tighter correlation in the infrared-to-ultraviolet ratio versus ultraviolet spectral slope, due in large part to the lack of luminous early-type galaxies in the Local Volume.
Dale Daniel A.
LVL Team
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