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Dust and Atomic Gas in Dwarf Irregular Galaxies of the M81 Group: The SINGS and THINGS View

Walter, Fabian; Cannon, John M.; Roussel, Helene; Bendo, George J; Calzetti, Daniela; Dale, Daniel A; Draine, Bruce T; Helou, George; Kennicutt, Robert C; Moustakas, John; Rieke, George H.; Armus, Lee; Engelbracht, Charles W; Gordon, Karl D; Hollenbach, David J.; Lee, Janice; Li, Aigen; Meyer, Martin; Murphy, Eric J; Regan, Michael W.; Smith, John-David T; Brinks, Elias; de Blok, Willem; Bigiel, Frank; Thornley, Michele D


We present observations of the dust and atomic gas phase in seven dwarf irregular galaxies of the M81 group from the Spitzer SINGS and VLA THINGS surveys. The Spitzer observations provide a first glimpse of the nature of the nonatomic ISM in these metal-poor (Z ∼ 0.1 Z ⊙), quiescent (SFR ∼ 0.001-0.1 M ⊙ yr -1) dwarf galaxies. Most detected dust emission is restricted to H I column densities >1 × 10 21 cm -2, and almost all regions of high H I column density (>2.5 × 10 21 cm -2) have associated...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1086/514807


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