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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. 8.

Pair statistics (Nc and Lc) are given for SSRS2 (﹩\left< z\right>=0.015﹩) and CNOC2 (﹩\left< z\right>=0.30﹩). Measurements are given for ﹩r^{\mathrm{max}\,}_{p}=20﹩ h−1 kpc (bottom), ﹩r^{\mathrm{max}\,}_{p}=50﹩ h−1 kpc (middle), and ﹩r^{\mathrm{max}\,}_{p}=100﹩ h−1 kpc (top). Best‐fit lines indicate evolution varying as ﹩( 1+z) ^{m}﹩. For ﹩r^{\mathrm{max}\,}_{p}=( 20,\ 50,\ 100) ﹩ h−1 kpc, values of m used are (1.44, 2.26, 1.66) for Nc and (1.34, 2.28, 1.70) for Lc. Increases in both Nc and Lc with redshift are seen for all three choices of ﹩r^{\mathrm{max}\,}_{p}﹩.

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