Astronomy & Astrophysics

Table 1: Stellar parameters; $v\sin i$ from Delfosse et al. (1998) except AT Mic (Fuhrmeister et al. 2004) and EQ Peg (Stauffer & Hartmann 1986), J from 2MASS point source catalog, $L_{\rm bol}$ calculated from J using values of Kenyon & Hartmann (1995), $L_{\rm bol}$ / $L_{\rm X}$ with $L_{\rm X}$ (this work, PN).
Table 2: Observation log.
Table 3: Selection of flaring data (PN).
Table 4: Results on temperatures (keV), emission measures (10⁵¹ cm^-3) and abundances relative to solar photospheric values, errors are 90% conf. range. (d.o.f. given in brackets). $L_{\rm X}$ (10²⁸ erg s^-1) indicates the 0.2-10.0 keV luminosity. The 6-T model grid is 0.2, 0.3, 0.6, 1.2, 2.4, 4.8 keV which corresponds to 2.3, 3.5, 7.0, 14.0, 28.0, 56.0 MK.
Table 5: Deviations of the XMM instruments from the mean scaled summed EM ( $\Sigma~EM * (A_{\rm Fe}+A_{0}$ )[10⁵¹ cm^-3]).