Angular Clustering of Galaxies at 3.6 μm from the SWIRE survey

Oliver, Seb, Waddington, Ian, Gonzalez‐Solares, Eduardo, Surace, Jason, Fang, Fan, Shupe, Dave, Jarrett, Tom, Lonsdale, Carol, Xu, Cong (Kevin), Farrah, Duncan, Salaman, Malcolm, Rowan‐Robinson, Michael, Siana, Brian and Smith, H. E. (Gene) (2004) Angular Clustering of Galaxies at 3.6 μm from the SWIRE survey. Astrophysical Journal, 154 (1). pp. 30-34. ISSN 0067-0049

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We present the first analysis of large-scale clustering from the Spitzer Widearea 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 two square degrees 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) = Aθ1−γ with A = (0.6 ± 0.3) × 10−3, γ = 2.03 ± 0.10. With a fixed slope of γ = 1.8, we obtain an amplitude of A = (1.7±0.1)×10−3. Assuming an equivalent depth of K ≈ 18.7 mag we find 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.

Item Type: Article
Keywords: large-scale structure of universe — infrared: galaxies — galaxies: evolution — galaxies: statistics
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Gemma Farrell
Date Deposited: 14 Mar 2008
Last Modified: 07 Mar 2017 07:05

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