Herschel-ATLAS/GAMA: spatial clustering of low-redshift sub-mm galaxies
astro-ph.CO
/ Authors
E. van Kampen, D. J. B. Smith, S. Maddox, A. M. Hopkins, I. Valtchanov, J. A. Peacock, M. J. Michalowski, P. Norberg, S. Eales, L. Dunne
and 37 more authors
J. Liske, M. Baes, D. Scott, E. Rigby, A. Robotham, P. van der Werf, E. Ibar, M. J. Jarvis, J. Loveday, R. Auld, I. K. Baldry, S. Bamford, E. Cameron, S. Croom, S. Buttiglione, A. Cava, A. Cooray, S. Driver, J. S. Dunlop, A. Dariush, J. Fritz, R. J. Ivison, E. Pascale, M. Pohlen
/ Abstract
We have measured the clustering properties of low-redshift (z < 0.3) sub-mm galaxies detected at 250 micron in the Herschel-ATLAS Science Demonstration Phase (SDP) field. We selected a sample for which we have high-quality spectroscopic redshifts, obtained from reliably matching the 250-micron sources to a complete (for r < 19.4) sample of galaxies from the GAMA database. Both the angular and spatial clustering strength are measured for all z < 0.3 sources as well as for five redshift slices with thickness delta z=0.05 in the range 0.05 < z < 0.3. Our measured spatial clustering length r_0 is comparable to that of optically-selected, moderately star-forming (blue) galaxies: we find values around 5 Mpc. One of the redshift bins contains an interesting structure, at z = 0.164.