Gonzalez-Solares, E.A.; Oliver, S.; Gruppioni, C.; Pozzi, F.; Lari, C.; Rowan-Robinson, M.; Serjeant, S.; La Franca, F. and Vaccari, M.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1111/j.1365-2966.2004.07890.x|
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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 deg2 and contains 462 sources detected at 15 mum to a 5sigma 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) =Atheta1-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 r0= 4.3+0.4-0.7h-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:||Journal Article|
|Extra Information:||Some of the symbols may not have transferred correctly into this bibliographic record and/or abstract.|
|Keywords:||clusters; galaxies; evolution; cosmology; observations; large-scale; structure of Universe; infrared|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Users 13 not found.|
|Date Deposited:||25 Oct 2006|
|Last Modified:||14 Jan 2016 16:16|
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