A first eROSITA view of ultracool dwarfs | Astronomy & Astrophysics (A&A)

The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the SRG mission

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Fig. 4

Gaia color-magnitude diagram (M_G vs G G_RP) for the two input lists of UCDs (GagnéM) and UCD candidates (Reylé 2018) described in Sect. 2. The subsamples that our source identification from Sect. 3 ascribes as bonafide or plausible counterpart to an eRASS1 X-ray source are highlighted with larger circles and colors, red for the known UCDs and blue for the UCD candidates.

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