The environment and characteristics of low-redshift galaxies detected by the Herschel-ATLAS

A Dariush, L Cortese, S Eales, Enzo Pascale, MWL Smith, L Dunne, S Dye, Douglas Scott, R Auld, M Baes, Jonathan Bland-Hawthorn, S Buttiglione, A Cava, D Clements, Asantha Cooray, G De Zotti, Simon Driver, J Fritz, H Gomez, Andrew HopkinsR Hopwood, R Ivison, M Jarvis, David Jones, L Kelvin, H Khosroshahi, J Liske, J Loveday, S Maddox, Barry Madore, M Michalowski, Peder Norberg, Steven Phillipps, M Pohlen, Cristina Popescu, Matthew Prescott, E Rigby, A Robotham, G Rodighiero, M Seibert, D Smith, P Temi, R Tuffs, P van der Werf

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    18 Citations (Scopus)

    Abstract

    We investigate the ultraviolet and optical properties and environment of low-redshift galaxies detected in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) science demonstration data. We use the Sloan Digital Sky Survey seventh release and the Galaxy And Mass Assembly data base to select galaxies with mag in the redshift range 0.02 a??za?? 0.2 and look for their submillimetre counterparts in H-ATLAS. Our results show that at low redshift, H-ATLAS detects mainly blue/star-forming galaxies with a minor contribution from red systems which are highly obscured by dust. In addition we find that the colour of a galaxy rather than the local density of its environment determines whether it is detectable by H-ATLAS. The average dust temperature of galaxies that are simultaneously detected by both PACS and SPIRE is 25 A? 4K, independent of environment. This analysis provides a glimpse of the potential of the H-ATLAS data to investigate the submillimetre properties of galaxies in the local universe.
    Original languageEnglish
    Pages (from-to)64 - 73
    Number of pages10
    JournalMonthly Notices of the Royal Astronomical Society
    Volume418
    Issue number1
    DOIs
    Publication statusPublished - 2011

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