Table 1: Properties of ultraviolet resonance lines with wind profiles.
Ion Abundance a I.P. range b Wavelengths c $\log f\lambda ~ ^c$
    (eV) (Å)  
O VI 8.87 113.9-138.1 1031.93, 1037.62 2.137, 1.836
N V 7.97 77.5-97.9 1238.82, 1242.80 2.289, 1.988
Si IV 7.55 33.5-45.1 1393.76, 1402.77 2.855, 2.554
C IV 8.55 47.9-64.5 1548.20, 1550.77 2.470, 2.169
a - Solar-system abundances from Grevesse & Noels (1993) and Anders & Grevesse (1989), expressed as $\log N / N_{\rm H} + 12.00$.

b - The ionization potentials are from Moore (1970).

c - The rest wavelengths and oscillator strengths for the blue and red components of the doublets are from Morton (2002,1991).


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