Evolution of colour-dependence of galaxy clustering up to z ~ 1.2 based on the data from the VVDS-Wide survey

Agnieszka Świętoń, Agnieszka Pollo and VVDS team

We discuss the dependence of galaxy clustering according to their colours up to z ~ 1.2. For that purpose we used one of the wide fields (F22) from the VIMOS-VLT Deep Survey (VVDS). For galaxies with absolute luminosities close to the characteristic Schechter luminosities M* at a given redshift, we measured the projected two-point correlation function wp(rp) and we estimated the best-fit parameters for a single power-law model: ζ(r) = (r/r₀)^-γ), where r₀ is the correlation length and gamma  is the slope of correlation function. Our results show that red galaxies exhibit the strongest clustering in all epochs up to z ~ 1.2. Green valley represents the "intermediate" population and blue cloud shows the weakest clustering strength. We also compared the shape of ω_p(r_p) for different galaxy populations. All three populations have different clustering properties on the small scales, similarly to the behaviour observed in the local catalogues.

Proceedings of the Polish Astronomical Society, vol. 1, 47-52 (2014)

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