The redshift evolution of clustering in the Hubble Deep Field |
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| Authors: | M Magliocchetti S J Maddox |
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| Institution: | Institute of Astronomy, Madingley Road, Cambridge CB3 0HA; School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD |
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| Abstract: | We present a correlation function analysis for the catalogue of photometric redshifts obtained from the Hubble Deep Field image by Fernandez-Soto, Lanzetta & Yahil. By dividing the catalogue into redshift bins of width Δ z =0.4 we measured the angular correlation function w ( θ ) as a function of redshift up to z ～4.8. From these measurements we derive the trend of the correlation length r 0. We find that r 0( z ) is roughly constant with look-back time up to z ?2, and then increases to higher values at z ?2.4. We estimate the values of r 0, assuming ξ ( r , z )= r r 0( z )]? γ , γ =1.8 and various geometries. For Ω0=1 we find r 0( z =3)?7.00±4.87 h ?1 Mpc, in good agreement with the values obtained from analysis of the Lyman break galaxies. |
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| Keywords: | galaxies: clusters: general galaxies: general cosmology: observations large-scale structure of Universe |
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