NASA NTRS · 20100032031
Herschel-ATLAS: The Angular Correlation Function of Submillimetre Galaxies at High and Low Redshift
Abstract
We present measurements of the angular correlation function of galaxies selected from the first field of the H-ATLAS survey. Careful removal of the background from galactic cirrus is essential, and currently dominates the uncertainty in our measurements. For our 250 micrometer-selected sample we detect no significant clustering, consistent with the expectation that the 250 pm-selected sources are mostly normal galaxies at z < or equal to 1. For our 350 micrometer and 500 micrometer-selected samples we detect relatively strong clustering with correlation amplitudes A of 0.2 and 1.2 at 1', but with relatively large uncertainties. For samples which preferentially select high redshift galaxies at z approx. 2-3 we detect significant strong clustering, leading to an estimate of r(0) approx. 7-11/h Mpc. The slope of our clustering measurements is very steep. delta approx. 2. The measurements are consistent with the idea that sub-mm sources consist of a low redshift population of normal galaxies and a high redshift population of highly clustered star-bursting galaxies.
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Maddox, S. J., Dunne, L., Rigby, E., Eales, S., Cooray, A., Scott, D., Peacock, J. A., Negrello, M., Smith, D. J. B., Benford, D., Amblard, A., Auld, R., Baes, M., Bonfield, D., Burgarella, D., Buttiglione, S., Cava, A., Clements, D., Dariush, A., deZotti, G., Dye, S., Frayer, D., Fritz, J., Gonzalez-Nuevo, J., Herranz, D.. 2010-01-01. Herschel-ATLAS: The Angular Correlation Function of Submillimetre Galaxies at High and Low Redshift. https://ntrs.nasa.gov/citations/20100032031
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