Table 9: Properties of active M dwarfs observed with Chandra HETGS. X-ray luminosities are computed from the total background-subtracted counts contained in the MEG spectra from 2-25 Å. Values given in brackets correspond to the quiescent state.
Star Spectral Distance Age $P_{\rm rot}$ ObsID Exposure time log LX log $L_{{X}}/L_{{\rm bol}}$
  Type [pc] [Myr] [d]   [ks]        
YY Gem M 0.5 15.27 3701 0.8145 8504/8509 136.0 (81.5) 29.63 (29.43) -3.17 (-3.37)
AU Mic M 1 9.94 122 4.8656 17 58.8 (47.4) 29.19 (29.13) -3.48 (-3.54)
EQ Peg A M 3.5 6.25 9503 (1.0667) 8453/8484/8485/8486 98.5 (92.8) 28.71 (28.67) -3.19 (-3.23)
EV Lac M 3.5 5.05 453 4.3768 1885 100.0 (87.3) 28.63 (28.51) -3.10 (-3.22)
AD Leo M 4.5 4.69 4703 2.7/149,10 2570 45.2 - 28.54 - -3.36 -
EQ Peg B M 4.5 6.25 9503 (1.0667) 8453/8484/8485/8486 98.5 - 27.89 - -3.39 -
Proxima Cen M 5.5 1.30 58004 83.510 2388 42.4 (35.7) 26.85 (26.60) -3.96 (-4.21)
1 Torres & Ribas (2002); 2 Zuckerman et al. (2001); 3 Parsamyan (1995); 4 Yildiz (2007); 5 Kron (1952); 6 Torres et al. (1972); 7 Norton et al. (2007); 8 Pettersen et al. (1992); 9 Spiesman & Hawley (1986); 10 Mahmoud (1993); 11 Benedict et al. (1998).


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