Cold galaxies
arXiv:1507.08778 · doi:10.1093/mnras/stv1762
Abstract
We use 350 mu angular diameter estimates from Planck to test the idea that some galaxies contain exceptionally cold (10-13 K) dust, since colder dust implies a lower surface brightness radiation field illuminating the dust, and hence a greater physical extent for a given luminosity. The galaxies identified from their spectral energy distributions as containing cold dust do indeed show the expected larger 350 mu diameters. For a few cold dust galaxies where Herschel data are available we are able to use submillimetre maps or surface brightness profiles to locate the cold dust, which as expected generally lies outside the optical galaxy.
9 pages, 15 figures. Accepted for publication MNRAS
References in corpus (5)
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- The identification of dust heating mechanisms in nearby galaxies using Herschel 160/250 and 250/350 micron surface brightness ratios
- The Revised IRAS-FSC Redshift Catalogue (RIFSCz)
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