Large-scale structure in the ELAIS S1 survey

Gonzalez-Solares, Eduardo and Oliver, Seb and Gruppioni, Carlotta and Pozzi, Francesca and Lari, C. and Rowan-Robinson, Michael and Serjeant, Stephen and La Franca, Fabio and Vaccari, Mattia (2004) Large-scale structure in the ELAIS S1 survey. Monthly Notices of the Royal Astronomical Society, 352 (1). pp. 44-48. ISSN 0035-8711. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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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.

Item Type: Article
Additional information: 29 BLACKWELL PUBLISHING LTD 836TI
Uncontrolled keywords: galaxies : clusters : general; galaxies : evolution; cosmology : observations; large-scale structure of Universe; infrared : galaxies
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 23 Sep 2008 17:41
Last Modified: 18 Jul 2014 10:51
Resource URI: (The current URI for this page, for reference purposes)
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