2004ApJS..154...30O

We present the first analysis of large-scale clustering from the Spitzer Wide-area Infrared Extragalactic legacy survey (SWIRE). We compute the angular correlation function of galaxies selected to have 3.6 µm fluxes brighter than 32 µJy in three fields totaling 2 deg² in area. In each field we detect clustering with a high level of significance. The amplitude and slope of the correlation function is consistent between the three fields and is modeled as w(θ)=Aθ^1–γ with A=(0.6±0.3)x10^–3,γ=2.03±0.10. With a fixed slope of γ=1.8, we obtain an amplitude of A=(1.7±0.1)x10^–3. Assuming an equivalent depth of K~18.7 mag we find that our errors are smaller but our results are consistent with existing clustering measurements in K-band surveys and with stable clustering models. We estimate our median redshift z≃0.75, and this allows us to obtain an estimate of the three-dimensional correlation function ξ(r), for which we find r₀=4.4±0.1h^–1 Mpc.