Table 6: The 20 stars showing H$\alpha $  excess.
Active V Sp.type Inactive Sp.type. H$\alpha $   EW X-ray activity Note New/known
program star     comp. star   (Å)     chromospheric emission
HD 170493 8.05 K3V HD 219134 K3V 0.1     new
HD 175905 7.66 K0III HD 188947 K0III 0.2     new
HD 168159 9.29 K3V HD 219134 K3V 0.3 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.91$ a known
HD 175545 7.40 K0III HD 188947 K0III 0.3     new
NGC 2264 VAS 10 11.67 K0IB HD 206778 K2Ib 0.3     new
NGC 6705 602 11.46 K0.5II HD 164349 K0.5II 0.3     new
HD 178126 9.22 K3V HD 219134 K3V 0.4     new
HD 262323 8.75 K0Ibvar HD 206778 K2Ib 0.4     new
HD 52919 8.34 K2V HD 4628 K2V 0.5 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.78$ a new
HD 46122 7.32 G6IV HD 190360 G6IV 0.7 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.21$ a new
HD 289114 8.98 K2V HD 4628 K2V 0.8     known
NGC 2264 VAS 92 12.38 G5V HD 190360 G6IV 0.9 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.89$ b new
HD 51478 8.08 M3III HD 2411 M3III 3.0     known
1E0650.4-0520 12.60 M2V HD 95735 M2V 3.1 log F $_{\rm X}=-1$3.57 (Wm-2) b new
HD 52690 6.52 M3V HD 95735 M2V 3.3     new
1E0627.3-0245 13.80 M4III HD 130144 M5III 6.6 log F $_{\rm X}=-1$3.91 (Wm-2) b new
IP Mon 13.44 K2V 61 CygA K5V 6.7 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.23$ b known
IO Mon 13.77 K2V 61 CygA K5V 18.2 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.31$ b known
MM Mon 14.14 K7V 61 CygA K5V 29.8 log $\frac{L_{\rm X}}{L_{\rm bol}}=-2.79$ b known
MO Mon 13.65 K7V 61 CygA K5V 42.7 log $\frac{L_{\rm X}}{L_{\rm bol}}=-3.10$ b known

a: From ROSAT-PSPC ; b: from XMM-Newton EPIC.

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