Measuring and modelling the redshift evolution of clustering: the Hubble Deep Field North

摘要: ABSTRA C T The evolution of galaxy clustering from za 0t oz . 4:5 is analysed using the angular correlation function and photometric redshift distribution galaxies brighter than IAB < 28:5 in Hubble Deep Field North. reliability estimates discussed on basis available spectroscopic redshifts, comparing different codes investigating effects errors. bins which properties are measured then optimized to take into account uncertainties redshifts. results show that comoving length r0 has a small decrease range 0 & z 1 followed by an increase at higher z. We compare these with theoretical predictions variety cosmological models belonging general class Cold Dark Matter scenarios, including Einstein‐de Sitter models, open model flat non-zero constant. Comparison expected mass indicates observed high-redshift biased tracers dark matter effective bias b strongly increasing redshift. Assuming universe, we obtain 2: 5a tz 2 4. These support scenarios formation high preferentially located more massive haloes. Moreover, they suggest usual parameterization as jOr; zUajOr; 0UO1 zU 2O31eU not good description for any value e amplitudes 3 those reported Adelberger et al. Giavalisco al., based selection, suggests depends abundance objects: abundant objects less clustered, paradigm hierarchical formation. strong consistent density haloes predicted frame various cosmologies considered here. At 4, requires significant fraction be already formed epoch. This feature could discriminant test parameters if confirmed future observations.