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Dynamically Close Galaxy Pairs and Merger Rate Evolution in the CNOC2 Redshift Survey

  • Authors: D. R. Patton, C. J. Pritchet, R. G. Carlberg, R. O. Marzke, H. K. C. Yee, P. B. Hall, H. Lin, S. L. Morris, M. Sawicki, C. W. Shepherd, and G. D. Wirth

Patton et al. 2002 The Astrophysical Journal 565 208.

  • Provider: AAS Journals

Caption: Fig. 6.

Pair statistics are computed for ﹩\Delta v\leq 500﹩ km s−1, for a range of maximum projected separations (﹩r^{\mathrm{max}\,}_{p}﹩). A minimum projected separation of ﹩r_{p}=5﹩ h−1 kpc is applied in each case. Error bars are computed using the Jackknife technique. Both Nc and Lc are cumulative statistics; hence, measurements in successive bins are not independent. The line in each panel follows the ﹩r^{3-\gamma }_{p}﹩ dependence that results from integration over the galaxy two‐point correlation function. Taking ﹩\gamma =1.8﹩ and requiring a match with the data at ﹩r_{p}=100﹩ h−1 kpc, we find good agreement at all separations.

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