Astronomy & Astrophysics

Table 1: Oxygen emission lines used in the present analysis. Transitions within 0.4 Å are blended in the CDS spectra. Wavelengths are from v5.1 of the CHIANTI database (Landi et al. 2005).
Table 2: A(Ne)/A(O) values derived for different assumptions: fixed pressure, fixed density, and displacements of the neon ion fractions.