Gonzalez-Solares, E.A. and Oliver, S. and Gruppioni, C. and Pozzi, F. and Lari, C. and Rowan-Robinson, M. and Serjeant, S. and La Franca, F. and Vaccari, M. (2004) Large-scale structure in the ELAIS S1 survey. Monthly Notices of the Royal Astronomical Society, 352 (1). pp. 44-48. ISSN 0035-8711.
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We present an analysis of the two-point angular correlation function of The European Large-Area Infrared Space Observatory (ELAIS) S1 survey. The survey covers 4 deg(2) and contains 462 sources detected at 15 mum to a 5 flux limit of 0.45 mJy. Using the 329 extragalactic sources not repeated in different observations, we detect a significant clustering signal; the resulting angular correlation function can be fitted by a power law w (theta)=Atheta(1-gamma) with A=0.014+/-0.005 and gamma=2.04+/-0.18. Using the observed redshift distribution of the objects (from spectroscopic and photometric redshifts), we invert Limber's equation and deduce a spatial correlation length r(0)=4.3(-0.7)(+0.4) h(-1) Mpc. This is smaller than that obtained from optical surveys but it is in agreement with results from IRAS. This extends to higher redshift the observational evidence that infrared selected surveys show smaller correlation lengths (i.e. reduced clustering amplitudes) than optical surveys.
|Additional information:||29 BLACKWELL PUBLISHING LTD 836TI|
|Uncontrolled keywords:||galaxies : clusters : general; galaxies : evolution; cosmology : observations; large-scale structure of Universe; infrared : galaxies|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences|
|Depositing User:||Maggie Francis|
|Date Deposited:||23 Sep 2008 17:41|
|Last Modified:||14 Jan 2010 14:46|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/11780 (The current URI for this page, for reference purposes)|
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