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Fig. 3
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J - Ks versus ɡ – i color-color diagram, using aperture magnitudes within 3″ diameter to visualise the star/galaxy separation. Here, stars are in red and galaxies in blue. The contamination of red points on the galaxy region with J – Ks > 0.2 is 14.8% and agrees with the 17.3% expected from the spectroscopic sample.
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