On the Growth Rate of the Correlation Function of Faint Galaxies

  • David Valls-Gabaud
  • Boud Roukema
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 171)


We constrain the growth rate of structure, as represented by the spatial two-point galaxy auto-correlation function, at redshifts where this has not yet been measured directly by combining recent measurements of the amplitude of the angular two-point galaxy auto-correlation, at magnitudes as faint as Vmedian ≤ 25, with new observations of the redshift distribution of very faint galaxies. We show that ξ for the overall galaxy population (at a fixed proper separation r) grows (1 + z)4±1 times as fast as clustering which is fixed in proper coordinates. Even extreme models where “blue” galaxies have a smaller, IRAS-like, correlation function do not reduce the growth rate below (1 + z)2 5±1 times the clustering fixed in proper coordinates (Roukema, B.F. and Valls-Gabaud, D. (1995) A&A, submitted).

Copyright information

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • David Valls-Gabaud
    • 1
  • Boud Roukema
    • 2
  1. 1.Observatoire de StrasbourgStrasbourgFrance
  2. 2.Astronomy CentreUniversity of SussexBrightonUK

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