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Table 1.

Variables available for the WINGS sample.

B − V B − V colour
log(Re) Logarithm of effective radius [kpc]
nV Sersic index
μe Mean effective surface brightness
Hβ Equivalent width of Hβ
D4000 Balmer discontinuity index
log(M*) Logarithm of stellar mass

MV Absolute V magnitude
T Morphological type
ϵ Ellipticity
ΔCC Projected distance to cluster centre
sfr1 Star formation rate in M yr−1: stellar mass
produced within the age bin 0 − 2 × 107 yr
sfr2 Idem of sfr1 for the bin 2 × 107 − 6 × 108 yr
sfr3 Idem of sfr1 for the bin 6 × 108 − 5.6 × 109 yr
sfr4 Idem of sfr1 for the bin 5.6 × 109 − 17.8 × 109 yr
M1/M4 Stellar production ratio:
(sfr1×2×107)/(sfr4×(17.8×109−5.6×109))
W(Hα) Rest-frame W(Hα)
[NII]/Hα Intensity ratio [NII]λ 6584/Hα

Notes. Only the seven first parameters (top panel) have been used for the clustering and maximum parsimony analysis.

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