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Figure 1: The stellar kinematical measurements along the major axis of NGC 1052. a) The line-of-sight velocity rotation curve; b) the line-of-sight velocity dispersion radial profile. Our data are plotted using solid squares. The data of Binney et al. (1990), open squares, and Fried & Illingworth (1994), open triangles, are presented as well. |
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Figure 2: The stellar kinematical measurements along the minor axis of NGC 1052. a) The line-of-sight velocity rotation curve; b) the line-of-sight velocity dispersion radial profile. Our data are plotted using solid squares. The data of Binney et al. (1990), open squares, are presented as well. |
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Figure 3: The stellar kinematical measurements along the major axis of NGC 7796. a) The line-of-sight velocity rotation curve; b) the line-of-sight velocity dispersion radial profile. Our data are plotted using solid squares. The data of Bertin et al. (1994), open squares, are presented as well. |
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Figure 4: The stellar kinematical measurements along the minor axis of NGC 7796. a) The line-of-sight velocity rotation curve; b) the line-of-sight velocity dispersion radial profile. |
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Figure 5:
Radial gradients of
Fe4383, Fe4531, Fe4668, Fe5270, Fe5335 and
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Figure 6: Radial gradients of Fe5406, Fe5709, Fe5782, Ca4455, Mg b and Na D along both axes of NGC 1052. The notation is the same as in Fig. 5. The Na D data of Carollo et al. (1993) along the E-W direction, open triangles, are also plotted. |
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Figure 7: Radial gradients of Mg1 and Mg2along both axes of NGC 1052. The notation is the same as in Fig. 5. The fit for the minor axis Mg2 data is not plotted. The Mg2 data of Couture & Hardy (1988) along the major and minor axis, open squares and open triangles respectively, are also plotted ( bottom panel). The Mg1 and Mg2 data of Carollo et al. (1993) along the E-W direction, open pentagons, are plotted ( both panels). |
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Figure 8:
Radial gradients of
Fe4383, Fe4531, Fe4668, Fe5270, Fe5335 and
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Figure 9: Radial gradients of Fe5406, Fe5709, Fe5782, Ca4455, Mg b and Na D along both axes of NGC 7796. The notation is the same as in Fig. 5. |
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Figure 10:
Radial gradients of
H![]() |
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Figure 11:
a) Mg b versus Fe4531 plot ( top panel);
b) Mg b versus Fe5270 plot ( bottom panel):
comparisons of Lick indices of the long slit spectra of NGC 1052
(both photometric axes)
with the theoretical ones of TMB (2003a)'s SSPs.
The index values of the spectra are represented
by solid black squares for the major axis data
and solid black circles for the minor axis data,
which are both connected by traced black lines.
The index errors are only plotted for the central spectrum data.
The SSP predicted index values are represented by open symbols
whose colour indicate the curve families with different [![]() ![]() ![]() ![]() |
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Figure 12: a) Mg b versus Fe5335; Mg b versus Fe5406 b): comparisons of the observed Lick indices of the aperture spectra of NGC 1052 with the theoretical ones of TMB (2003a)'s SSPs. The notation is the same as in Fig. 11. |
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Figure 13: a) Mg b versus Fe5709; b) Mg b versus Fe5782: comparisons of the observed Lick indices of the aperture spectra of NGC 1052 with the theoretical ones of TMB (2003a)'s SSPs. The notation is the same as in Fig. 11. |
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Figure 14:
a) Mg1 versus
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Figure 15:
Na D versus
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Figure 16:
[MgFe]
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Figure 17: a) Mg b versus Fe4531; b) Mg b versus Fe5270: comparisons of the observed Lick indices of the aperture spectra of NGC 7796 with the theoretical ones of TMB (2003a)'s SSPs. The notation is the same as in Fig. 11. |
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Figure 18: a) Mg b versus Fe5335; b) Mg b versus Fe5406: comparisons of the observed Lick indices of the aperture spectra of NGC 7796 with the theoretical ones of TMB (2003a)'s SSPs. The notation is the same as in Fig. 11. |
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Figure 19: a) Mg b versus Fe5709; b) Mg b versus Fe5782: comparisons of the observed Lick indices of the aperture spectra of NGC 7796 with the theoretical ones of TMB (2003a)'s SSPs. The notation is the same as in Fig. 11. |
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Figure 20:
a) Mg1 versus
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Figure 21:
Na D versus
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Figure 22:
[MgFe]
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Figure 23:
Spectra of the stellar population templates used in the synthesis,
normalized to
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Figure 24: Synthesis results of NGC 1052 in flux fractions as a function of the distance to the center along both photometric axes - panels a), b), c), d), e), f) and g) for the G1, G2, G3, Y1, Y2, Y3 and RHII components respectively; panel h) - spatial distribution of the internal reddening. Note that the abscissa axis has a different scale for each plot. |
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Figure 25: Synthesis results of NGC 7796 in flux fractions as a function of the distance to the center along both photometric axes - panels a), b), c), d), e), f) and g) for each base component; panel h) - spatial distribution of the internal reddening (like Fig. 24). |
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Figure 26: Stellar population synthesis of the central extraction of NGC 1052 (major axis extraction). a) Observed spectrum corrected for reddening and template spectrum. b) Residual spectrum as an emission spectrum. |
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Figure 27: Stellar population synthesis of the central extraction of NGC 7796 (major axis extraction). a) Observed spectrum corrected for reddening and template spectrum. b) Residual spectrum. |
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