University of Hertfordshire Research Archive

        JavaScript is disabled for your browser. Some features of this site may not work without it.

        Browse

        All of UHRABy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

        Arkivum Files

        My Downloads
        View Item 
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item

        Herschel -ATLAS/GAMA : a census of dust in optically selected galaxies from stacking at submillimetre wavelengths

        View/Open
        Final Accepted Version (PDF, 1Mb)
        Author
        Bourne, N.
        Maddox, S. J.
        Dunne, L.
        Auld, R.
        Baes, M.
        Baldry, I. K.
        Bonfield, D. G.
        Cooray, A.
        Croom, S. M.
        Dariush, A.
        de Zotti, G.
        Driver, S. P.
        Dye, S.
        Eales, S.
        Gomez, H.L.
        Gonzalez-Nuevo, J.
        Hopkins, A. M.
        Ibar, E.
        Jarvis, M.J.
        Lapi, A.
        Madore, B.
        Michalowski, M. J.
        Pohlen, M.
        Popescu, C. C.
        Rigby, E. E.
        Seibert, M.
        Smith, Daniel
        Tuffs, R. J.
        van der Werf, P.
        Brough, S.
        Buttiglione, S.
        Cava, A.
        Clements, D. L.
        Conselice, C. J.
        Fritz, J.
        Hopwood, R.
        Ivison, R. J.
        Jones, D. H.
        Kelvin, L. S.
        Liske, J.
        Loveday, J.
        Norberg, P.
        Robotham, A. S. G.
        Rodighiero, G.
        Temi, P.
        Attention
        2299/8747
        Abstract
        We use the Herschel-ATLAS survey to conduct the first large-scale statistical study of the submillimetre properties of optically selected galaxies. Using similar to 80 000 r-band selected galaxies from 126 deg2 of the GAMA survey, we stack into submillimetre imaging at 250, 350 and 500 mu m to gain unprecedented statistics on the dust emission from galaxies at z < 0.35. We find that low-redshift galaxies account for 5 per cent of the cosmic 250-mu m background (4 per cent at 350 mu m; 3 per cent at 500 mu m), of which approximately 60 per cent comes from blue and 20 per cent from red galaxies (rest-frame g-r). We compare the dust properties of different galaxy populations by dividing the sample into bins of optical luminosity, stellar mass, colour and redshift. In blue galaxies we find that dust temperature and luminosity correlate strongly with stellar mass at a fixed redshift, but red galaxies do not follow these correlations and overall have lower luminosities and temperatures. We make reasonable assumptions to account for the contaminating flux from lensing by red-sequence galaxies and conclude that galaxies with different optical colours have fundamentally different dust emission properties. Results indicate that while blue galaxies are more luminous than red galaxies due to higher temperatures, the dust masses of the two samples are relatively similar. Dust mass is shown to correlate with stellar mass, although the dust-to-stellar mass ratio is much higher for low stellar mass galaxies, consistent with the lowest mass galaxies having the highest specific star formation rates. We stack the 250 mu m-to-NUV luminosity ratio, finding results consistent with greater obscuration of star formation at lower stellar mass and higher redshift. Submillimetre luminosities and dust masses of all galaxies are shown to evolve strongly with redshift, indicating a fall in the amount of obscured star formation in ordinary galaxies over the last four billion years.
        Publication date
        2012-04
        Published in
        Monthly Notices of the Royal Astronomical Society
        Published version
        https://doi.org/10.1111/j.1365-2966.2012.20528.x
        Other links
        http://hdl.handle.net/2299/8747
        Metadata
        Show full item record
        Keep in touch

        © 2019 University of Hertfordshire

        I want to...

        • Apply for a course
        • Download a Prospectus
        • Find a job at the University
        • Make a complaint
        • Contact the Press Office

        Go to...

        • Accommodation booking
        • Your student record
        • Bayfordbury
        • KASPAR
        • UH Arts

        The small print

        • Terms of use
        • Privacy and cookies
        • Criminal Finances Act 2017
        • Modern Slavery Act 2015
        • Sitemap

        Find/Contact us

        • T: +44 (0)1707 284000
        • E: ask@herts.ac.uk
        • Where to find us
        • Parking
        • hr
        • qaa
        • stonewall
        • AMBA
        • ECU Race Charter
        • disability confident
        • AthenaSwan