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Fig. 8

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a) Distribution of the K magnitude for all identified active coronae. b) Distribution of distances to the identified active coronae assuming they are all in the main-sequence and associated distribution of X-ray luminosities c). d) Distribution of distances for main-sequence and giant star candidates and corresponding X-ray luminosities e). We show distances only up to 2 kpc, since only a few sources, with spectral types A and F, are found at larger distances. We overplot in light grey the distribution for each spectral type, A to M stars from top to bottom on top of the total distribution (white) for comparison. Giant star candidates are shown in dark grey.

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