Table 5: Parameters derived from the multi-Gaussian fits to the transition region emission lines of $\alpha $ Cen A which show broad wings. Flux is in units of 10-15.
N ARROW C OMPONENT
I ON $v_{\rm rad}$ FWHM Flux
  (km s-1) (km s-1) (erg s-1 cm-2)
Si III 1206.510 $+5.2 \pm 0.4$ $48.7 \pm 0.4$ $1148.2 \pm 13.7$
  N V 1238.821 $+5.1 \pm 0.8$ $42.8 \pm 2.4$ $ 129.5 \pm 9.0 $
Si IV 1393.755 $+6.5 \pm 0.2$ $35.7 \pm 0.5$ $437.9 \pm 6.8 $
Si IV 1402.770 $+5.4 \pm 0.3$ $34.8 \pm 0.7$ $221.8 \pm 4.4 $
C IV 1548.187 $+8.8 \pm 0.2$ $43.2 \pm 0.4$ $996.0 \pm 11.5$
C IV 1550.772 $+7.8 \pm 0.4$ $42.3 \pm 1.5$ $478.2 \pm 22.9$
Flux-weighted      
average $+6.8\pm 1.5$ $43.4\pm 4.7$ ...
B ROAD C OMPONENT
I ON $v_{\rm rad}$ FWHM Flux
  (km s-1) (km s-1) (erg s-1 cm-2)
Si III 1206.510 $ -0.7 \pm 0.7$ $69.6 \pm 0.4$ $ 745.4 \pm 13.7$
  N V 1238.821 $ +0.9 \pm 1.2$ $70.4 \pm 2.4$ $ 187.8 \pm 7.4 $
Si IV 1393.755 $ +3.8 \pm 0.3$ $69.1 \pm 0.5$ $ 461.1 \pm 6.8 $
Si IV 1402.770 $ +3.9 \pm 0.6$ $65.6 \pm 0.8$ $ 228.8 \pm 4.4$
C IV 1548.187 $ +7.4 \pm 0.4$ $78.8 \pm 0.6$ $ 867.8 \pm 11.5$
C IV 1550.772 $ +4.5 \pm 0.6$ $72.1 \pm 1.7$ $ 474.0 \pm 32.5$
Flux-weighted      
average $+3.6\pm 3.1$ $72.4\pm 4.4$ ...
C OMPARISON
  F LUX R ATIO V ELOCITY S HIFT $\chi^2_r$
  $F_{\rm BC}$/ $F_{\rm tot}$ ( $v_{\rm NC}-v_{\rm BC}$)  
Si III 1206.510 $0.39 \pm 0.01$ $+5.9 \pm 0.8$ 1.12
  N V 1238.821 $0.59 \pm 0.03$ $+4.3 \pm 1.4$ 1.08
Si IV 1393.755 $0.51 \pm 0.01$ $+2.7 \pm 0.4$ 1.15
Si IV 1402.770 $0.51 \pm 0.01$ $+1.5 \pm 0.7$ 1.36
C IV 1548.187 $0.47 \pm 0.01$ $+1.4 \pm 0.5$ 1.17
C IV 1550.772 $0.50 \pm 0.04$ $+3.3 \pm 0.7$ 1.30
Flux-weighted      
average $0.46\pm 0.05$ $+3.4\pm1.8$  


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