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(abridged) The ESIS survey is the optical follow up of the SWIRE/Spitzer inthe ELAIS-S1 region of the sky. In the era of observational cosmology, the mainefforts are focused on the study of galaxy evolution and its environmentaldependence. Wide area, multiwavelength, extragalactic surveys are needed inorder to probe sufficiently large volumes, minimize cosmic variance and findsignificant numbers of rare objects. We present VIMOS I and z band imagingbelonging to the ESIS survey. A total of ~4 deg2 were targeted in I and ~1 deg2in z. More than 3 galaxies have been detected in the I band and ~50000 inthe z band. Object coordinates are defined within an uncertainty of ~0.2 arcsecr.m.s., with respect to GSC 2.2. We reach a 90% average completeness at 23.1and 22.5 mag (Vega) in the I and z bands, respectively. On the basis of IRACcolors, we identified galaxies having the 1.6 um stellar peak shifted to z=1-3.The new I, z band data provide reliable constraints to avoid low-redshiftinterlopers and reinforce this selection. Roughly 1000 galaxies between z=2-3were identified over the ESIS ~4 deg2, at the SWIRE 5.8 um depth (25.8 uJy at3sigma). These are the best galaxy candidates to dominate the massive tail(M>1e11 Msun) of the z>2 mass function.

The ESO-Spitzer Imaging extragalactic Survey (ESIS) II: VIMOS I,z wide field imaging of ELAIS-S1 and selection of distant massive galaxies