Fig. 7.
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Comparison of the observed WD LF of NGC 6791 (filled circles with error bars) with theoretical LFs calculated from the same isochrones of Fig. 5. Dotted, solid, and dashed lines correspond to ages of 8.0, 8.5, and 9.0 Gyr, respectively. The normalization of the theoretical LFs is arbitrary (but the total number of stars is the same in all the theoretical LFs).
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