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Open Access item Herschel-ATLAS: The angular correlation function of submillimetre galaxies at high and low redshift

Authors:Maddox, S. J.
Herranz, D.
López-Caniego, M.
Keywords:Submillimeter: galaxies, Galaxies: statistics
Issue Date:Jul-2010
Publisher:EDP Sciences
Citation:Astronomy and Astrophysics 518: L11 (2010)
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 μm-selected sample we detect no significant clustering, consistent with the expectation that the 250 μm-selected sources are mostly normal galaxies at z 1. For our 350 μm and 500 μm-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~2–3 we detect significant strong clustering, leading to an estimate of r0 ~ 7–11 h-1 Mpc. The slope of our clustering measurements is very steep, δ ~ 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.
Description:5 páginas, 3 figuras, 1 tabla.-- Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-- et al.
Publisher version (URL):http://dx.doi.org/10.1051/0004-6361/201014663
URI:http://hdl.handle.net/10261/46097
ISSN:0004-6361
E-ISSNmetadata.dc.identifier.doi = DOI:1432-0746
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Appears in Collections:(IFCA) Artículos

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