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Fig. 10

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Histogram of the spectral types for the population of the ρ Ophiuchi cluster. The lines show the distribution of all members (dotted line), and for the extinction limited samples for AV ≲ 8 (solid line), 15 (dashed line), and 20 mag (dash-dotted line). The peak of the distribution is located at a spectral type of M5.

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