Cold galaxies : J/MNRAS/453/2050


Authors : Rowan-Robinson M. orcid , Clements D.L. (hide) , Clements D.L. et..al

Bibcode : 2015MNRAS.453.2050R (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Galaxies, IR; Interstellar medium; Redshifts
UAT : Galaxies, Infrared sources, Interstellar medium, Redshifted

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Inserted into VizieR : 16-Dec-2019
Last modification : 15-Aug-2024

Cold galaxies. (2015)

Keywords : stars formation - galaxies: evolution - galaxies: starburst - cosmology: observations - infrared: galaxies

Abstract:We use 350 {mu}m 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}m 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. ...(more)
Abstract: (hide)
We have focused on those galaxies for which the predicted sub-mm diameter is greater than 3 arcmin and compared these with the PCCS sub-mm diameters (FWHM) observed by Planck at 350 {mu}m. We use the Gaussian half-power width measured along the major axis. Table 2 summarizes the properties of galaxies from the IRAS RIFSCz catalogue with predicted sub-mm diameter greater than 3 arcmin, spectroscopic redshifts, at least eight optical photometric bands, x2 for the infrared template fit <5 and SEDs dominated either by a cirrus or cool dust template.

  • II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
  • J/ApJS/141/157 : CO (J=1-0) data of cold IRAS sources (Yang+, 2002)

                
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