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Table 2

SSP equivalent central ages and metallicites, central velocity dispersions and gradients in age and metallicity obtained with ULySS.

Galaxy MD a LMIN−LMAXb Age0  [Gyr] [Fe/H]0 σ0 [km s-1]c ∇[Fe/H]d R2 e ∇aged R 2 e
NGC 1132 50 3800−6100 Å 15.1   ±   1.0 −0.11   ±   0.03 227   ±   3 − 0.14  ±  0.02 0.68 − 0.03  ±  0.02 0.13
RX J0752.7+4557 40 3800−5800 Å 9.7   ±   1.8 −0.01   ±   0.06 296   ±   18 − 0.28  ±  0.17 0.57 0.00  ±  0.08 0.00
RX J0844.9+4258 60 3800−5800 Å 17.3   ±   1.3 −0.05   ±   0.03 284   ±   4 − 0.12  ±  0.02 0.87 − 0.04  ±  0.02 0.48
RX J1152.6+0328 40 3800−5800 Å 12.4   ±   1.3 −0.07   ±   0.04 246   ±   5 − 0.31  ±  0.14 0.62 0.06  ±  0.03 0.59
RX J1520.9+4840 40 3800−5800 Å 11.1   ±   2.7 0.02   ±   0.07 279   ±   9 − 0.20  ±  0.06 0.71 − 0.05  ±  0.08 0.10
RX J1548.9+0851 40 3800−5800 Å 11.5   ±   2.1 −0.14   ±   0.06 292   ±   10 − 0.11  ±  0.09 0.30 0.04  ±  0.02 0.55

Notes.The corresponding fit parameters are also given.

(a)

Order of polynomial degree.

(b)

Wavelength range used for the SSP fit.

(c)

Aperture corrected central velocity dispersion.

(d)

Age- and metallicity gradients as defined in Eqs. (1) and (2).

(e)

Coefficient of determination: R2 = 1 − perfect linear relation; R2 = 0 − no linear relation.

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