Table 4: Results from the spectral fits using the EMD model1.
Parameters HD 283572 V 773 Tau V 410 Tau HP Tau/G2  

$N_{\rm H}$ [1022 cm-2]
= 0.08 2 = 0.17 2 = 0.02 2 = 0.41 2  
T0 [MK] 10.20 (9.20, 11.13) 8.72 (7.71, 9.74) 13.66 (10.79, 15.17) 10.06 (9.07, 11.41)  
EM [1052 cm-3]3 127.98 75.18 45.22 90.06  
$\beta $ -0.84 (-0.99, -0.70) -0.53 (-0.67, -0.40) -1.59 (-1.80, -0.87) -1.15 (-1.39, -0.99)  

4
0.24 (0.19, 0.29) 0.48 (0.39, 0.59) 0.39 (0.30, 0.47) 0.20 (0.06, 0.38)  
Ne 4 0.50 (0.40, 0.62) 1.30 (1.09, 1.55) 1.08 (0.83, 1.31) 0.65 (0.43, 0.91)  
Mg 4 0.51 (0.41, 0.63) 0.50 (0.37, 0.65) 0.26 (0.15, 0.38) 0.51 (0.35, 0.70)  
Si 4 0.25 (0.19, 0.32) 0.29 (0.21, 0.39) 0.12 (0.04, 0.20) 0.21 (0.13, 0.31)  
4 0.18 (0.08, 0.28) 0.64 (0.46, 0.83) 0.48 (0.33, 0.65) 0.26 (0.12, 0.41)  
Fe 4 0.33 (0.27, 0.39) 0.29 (0.23, 0.36) 0.20 (0.16, 0.24) 0.43 (0.34, 0.56)  
$T_{\rm av}$ [MK] 14.91 15.60 14.74 12.89  

$L_{\rm X}$ [1030 erg/s]5
13.26 8.85 4.57 9.60  
$\chi^2_{\rm red}$ 0.94 0.94 1.24 0.92  
d.o.f. 251 208 173 131  
Parameters SU Aur DH Tau BP Tau DN Tau AB Aur

$N_{\rm H}$ [1022 cm-2]
0.32 = 0.20 2 = 0.06 2 =0.07 2 0.05
T0 [MK] 7.66 (6.95, 8.13) 14.77 (12.37, 17.12) 11.58 (10.03, 15.11) 6.31 (4.16, 9.08) 4.38 (2.69, 5.68)
EM [1052 cm-3]3 57.84 87.88 11.24 15.37 5.12
$\beta $ -0.05 (-0.11, 0.06) -2.34 (-3.00, -1.73) -1.21 (-2.06, -0.93) -0.66 (-1.06, -0.33) -1.9 (-2.57, -1.52)

4
- - - - 0.57 (0.30, 1.13)
4 0.30 (0.24, 0.38) 0.49 (0.38, 0.64) 0.46 (0.36, 0.59) 0.11 (0.05, 0.23) 0.22 (0.13, 0.32)
Ne 4 0.38 (0.28, 0.53) 0.72 (0.55, 0.94) 0.91 (0.66, 1.18) 0.45 (0.19, 0.84) 0.62 (0.48, 1.04)
Mg 4 1.17 (1.05, 1.43) 0.33 (0.20, 0.48) 0.50 (0.32, 0.69) 0.52 (0.27, 0.90) 0.28 (0.13, 0.74)
Si 4 0.64 (0.57, 0.79) 0.16 (0.07, 0.25) 0.26 (0.15, 0.38) 0.29 (0.12, 0.56) 0.90 (0.60, 1.32)
4 0.57 (0.45, 0.72) 0.45 (0.30, 0.62) 0.56 (0.34, 0.78) 0.11 (0.00, 0.56) -
Fe 4 0.67 (0.61, 0.77) 0.16 (0.11, 0.23) 0.18 (0.12, 0.24) 0.12 (0.06, 0.23) 0.29 (0.22, 0.47)
$T_{\rm av}$ [MK] 20.07 13.76 14.28 11.30 4.71

$L_{\rm X}$ [1030 erg/s]5
7.79 8.20 1.16 1.24 0.39

$\chi^2_{\rm red}$
1.23 1.00 1.32 1.06 1.02
d.o.f. 446 142 161 45 79
1 68% error ranges are given in parentheses.
2 Held fixed at values found in the XEST survey (Güdel et al. 2007a).
3 Total EM integrated over temperature bins between $\log T = 6{-}7.9$ [K] (see Güdel et al. 2007a for more details).
4 Element abundances are with respect to solar values given by Anders & Grevesse (1989) (Grevesse & Sauval 1999 for Fe).
5 Determined in the 0.3-10.0 keV band.

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