First eROSITA study of nearby M dwarfs and the rotation-activity relation in combination with TESS

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

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Table 6

Results obtained from fitting L_x – M_⋆ and L/L_bol – M_⋆ for the full sample (LG11-Gaia-eFEDS, LG11-Gaia-eRASS1 and Gaia-Magaudda20) and for the saturated subsamples, i.e., stars with P_rot ≤ P_sat; see Sects. 6.2 and 6.3 for details.

Sample	βL_x–M_⋆	log(L_x) (M_⋆ = 0.5 M_⊙) [ergs^–1]	βL_x/L_bol–M_⋆
Full	+2.84 ± 0.25	28.37 ± 0.07	–0.10 ± 0.10	–3.79 ± 0.03
Saturated	+3.10 ± 0.27	28.89 ± 0.08	+0.36 ± 0.25	–3.24 ± 0.08

Notes. – We show the slopes for the L_x – M_⋆ and L_x/L_bol – M_⋆ relations (Cols. 2 and 4), and in Cols. 3 and 5, the L_x –, L_x/L_bol level refers to the mass distribution center (M_⋆ = 0.5 M_⊙).

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