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Table 5.

Median values of the Dn(4000) index and stellar masses (log M*), and the fractions of galaxies with Dn(4000) ≥ 1.75 (f1.75), 1.35 < Dn(4000) ≤ 1.75 (f1.55), and Dn(4000) ≤ 1.35 (f1.35) for galaxies in the CB and SCl A2142 clusters and in their spheres of influence, R30.

(1) (2) (3) (4) (5) (6) (7)

ID Ngalv Dnmed f1.75 f1.55 f1.35
Clusters

A2065 103 1.84 0.61 0.25 0.14 10.66
A2089 40 1.87 0.60 0.35 0.05 10.56
A2061 81 1.91 0.72 0.17 0.11 10.61
Gr2064 61 1.88 0.64 0.28 0.08 10.65
A2142 197 1.88 0.72 0.23 0.06 10.70

R30

A2065R30 210 1.75 0.50 0.35 0.15 10.60
A2089R30 23 1.73 0.48 0.48 0.04 10.72
A2061R30 109 1.80 0.54 0.34 0.12 10.64
Gr2064R30 48 1.73 0.50 0.29 0.21 10.57
A2142R30 49 1.80 0.53 0.27 0.20 10.59

Notes. Columns are as follows: (1): Cluster ID; (2): Number of galaxies in a cluster (with Mr = −19.6 mag); (3): Median value of the Dn(4000) index for galaxies in a cluster; (4–6): Fractions of galaxies with Dn(4000) ≥ 1.75 (f1.75), 1.35 < Dn(4000) ≤ 1.75 (f1.55), and Dn(4000) ≤ 1.35 (f1.35) in a cluster; (7): Median value of the stellar masses (log M*) of galaxies in a cluster.

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