Herschel ? - ATLAS / GAMA : The Environmental Density of Far - Infrared Bright Galaxies at z ≤ 0 . 5

C. S. Burton†, Matt J. Jarvis, D. J. B. Smith, D. G. Bonfield, M. J. Hardcastle, J.A. Stevens, N. Bourne, M. Baes, S. Brough, A. Cava, A. Cooray, A. Dariush, G. De Zotti, L. Dunne, S. Eales, R. Hopwood, E. Ibar, R. J. Ivison, J. Liske, J. Loveday, S. J. Maddox, M. Negrello, M. W. L. Smith and E. Valiante 1Centre for Astrophysics, Science & Technology Research Institute, University of Hertfordshire, AL10 9AB, UK 2Oxford Astrophysics, Department of Physics, Keble Road, Oxford, OX1 3RH, UK 3Physics Department, University of the Western Cape, Bellville 7535, South Africa 4School of Physics & Astronomy, Nottingham University, University Park Campus, Nottingham, NG7 2RD, UK 5Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium 6Australian Astronomical Observatory, P.O. Box 915, North Ryde, NSW 1670, Australia 7Departamento de Astrofı́sica, Facultad de CC. Fı́sicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain 8Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA 9Physics Department, Imperial College London, Prince Consort Road, London, SW7 2AZ, UK 10INAF Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy 11SISSA, Via Bonomea 265, I-34136 Trieste, Italy 12Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand 13School of Physics and Astronomy, Cardiff University, Queens Buildings, The Parade, Cardiff CF24 3AA, UK 14Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK 15UK Astronomy Technology Centre, Royal Observatory, Edinburgh, EH9 3HJ, UK 16Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK 17European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany 18Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, UK