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

A. Dariush, L. Cortese, S. Eales, E. Pascale, M. W. L. Smith, L. Dunne, S. Dye, D. Scott, R. Auld, M. Baes, J. Bland-Hawthorn, S. Buttiglione, A. Cava, D. L. Clements, A. Cooray, G. Dezotti, S. Driver, J. Fritz, H.L. Gomez, A. HopkinsR. Hopwood, R.J. Ivison, M.J. Jarvis, D. H. Jones, L. Kelvin, H. G. Khosroshahi, J. Liske, J. Loveday, S. Maddox, B. F. Madore, M. J. Michalowski, P. Norberg, S. Phillipps, M. Pohlen, C. C. Popescu, M. Prescott, E. Rigby, A. Robotham, G. Rodighiero, M. Seibert, Daniel Smith, P. Temi, R. J. Tuffs, P. van der Werf

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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=z=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 +/- 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
Issue number1
Publication statusPublished - 1 Nov 2011


  • methods: data analysis, galaxies: general, galaxies: statistics, submillimetre: galaxies, submillimetre: general


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