Fig. 7
Top: 2D K-band – based on VIRCAM-SOFI photometry – luminosity function of field RGs surrounding NGC 6528. Middle: projected K-band luminosity function of field RGs. The two Gaussian functions adopted to fit the RC-RHB regions are overplotted as red solid lines. The green line shows the cumulative fit. Bottom: projected K-band luminosity function of NGC 6528 RGs selected according to proper motions. Symbols and lines are the same as in the middle panel.
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