Fig. 1
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Left: X-ray luminosity (0.1-2.4 keV) versus Gaia GBP-GRP colour for the eRASS1-detected M- and FGK-type stars (Merloni et al. 2024) in the western Galactic hemisphere of the 10-pc Gaia sample. Filled blue circles: eRASS1-detected M dwarfs (l ≥ 180°); filled red circles: eRASS1-detected FGK stars (l ≥ 180°). Notable sources are labeled. Right: eRASS:4 total observed counts in 0.2-2.0 keV versus the distance from the Sun for the 10-pc Gaia sample in the western Galactic hemisphere, with detections and non-detections for M dwarfs (blue, cyan) and FGK stars (brown, coral).
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