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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

Description

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
URI: http://hdl.handle.net/1885/20148
Source: Astrophysical Journal, The
DOI: 10.1086/514807

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