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Figure 1: Images of representative galaxies of all 4 morphological types, at two apparent magnitudes. Note that the grey scale contrasts are not identical in the 8 frames. As we explained in the text, for the fainter galaxies we sometimes used the brightness profile as additional evidence for the morphological classification. |
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Figure 2: The cumulative rate of agreement between the results of different classifiers, to within n broad Hubble types. Clearly, the performance of the different classifications is very similar. |
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Figure 3: The dependence of the fraction of ELG on the normalised projected cluster-centric distance R/r200, for all galaxies in the 67 clusters with at least 20 member galaxies and with z<0.1(filled circles). Also shown are the fractions for the individual galaxy classes. |
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Figure 4:
For each of the 66 combinations of
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Figure 5:
The normalized cumulative
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Figure 6: The mean spectra for ellipticals (E), S0 galaxies, early spirals (Se) and late spirals (Sl), without emission lines (non-ELG). The mean spectrum was determined by averaging individual spectra in which the mean flux was normalised to one (arbitrary units). The individual galaxy spectra were not spectro-photometrically calibrated, but have been corrected for the spectral response of spectrograph and detector. |
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Figure 7:
The difference (in magnitudes) between the spectra of
the faint (MR>-20) and bright (
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Figure 8:
The mean colors ![]() ![]() ![]() ![]() ![]() |
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Figure 9:
The strengths of the absorption lines. Filled and open
symbols refer to the bright and faint subsets of the 4 galaxy classes.
The upper 3 panels show the strengths of the 3 metal line(-complexe)s,
and the lower panel the strength of the H![]() ![]() |
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Figure 10:
The relation between color and metallicity. Because the
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Figure 11: The ratio (in magnitudes) between the mean non-ELG and ELG spectra for different morphological classes. The residual spectra all have identical (i.e. zero) mean flux, but they were offset to be shown in one figure. |
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