Cold Dust and Very Cold Excess Emission in the Galaxy |
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Authors: | Hervé Bourdin Françcois Boulanger Jean-Philippe Bernard Guilaine Lagache |
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Affiliation: | (1) Institut d'Astrophysique Spatiale, Université Paris XI, Bat. 121, 91405 Orsay, France |
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Abstract: | We provide insight in the origin of the far-IR to mm emission from galaxies by presenting a decomposition of the Galaxy emission where we separate the contributions from dust in the atomic gas and dust associated with quiescent molecular gas as a function of Galacto-centric distance. This decomposition leaves a puzzling very cold emission excess with a brightness independent of Galactic longitude that might be pointing at interstellar matter in the outer Galaxy not traced by H I nor CO emission. This revised version was published online in September 2006 with corrections to the Cover Date. |
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Keywords: | dust the galaxy infrared |
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