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Table 1

Coefficients of the polynomial fit XLFSpT = Σn an(log LX)n.

Group a3 a2 a1 a0
All −2.64455e-02 2.06830e+00 −5.39290e+01 4.66404e+02
M (this work) −9.66074e-02 7.95632e+00 −2.18718e+02 2.00432e+03
M combined 3.28675e-03 −6.14826e-01 2.61803e+01 −3.25829e+02
FGK −1.25846e-01 1.06682e+01 −3.01598e+02 2.84023e+03
F −4.17879e-02 3.22189e+00 −8.19084e+01 6.81053e+02
G −2.87207e-01 2.51049e+01 −7.31781e+02 7.10888e+03
K −2.08187e-01 1.78631e+01 −5.11186e+02 4.87519e+03
giant −1.92483e-02 1.42941e+00 −3.44937e+01 2.62910e+02
Late-type companions? −6.81334e-02 5.6269e+00 −1.54705e+02 1.41098e+03
WD + binaries −7.91893e-02 6.92262e+00 −2.02051e+02 1.96305e+03

Notes. Joint fit of the 10 pc M dwarf sample (cyan star symbols) and the M dwarf group defined in this work (blue points).

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