C/O ratios in planetary nebulae with dual-dust chemistry from faint optical recombination lines
We present deep high-resolution (R similar to 15 000) and high-quality UVES optical spectrophotometry of nine planetary nebulae with dual-dust chemistry. We compute physical conditions from several diagnostics. Ionic abundances for a large number of ions of N, O, Ne, S, Cl, Ar, K, Fe and Kr are derived from collisionally excited lines. Elemental abundances are computed using state-of-the-art ionization correction factors. We derive accurate C/O ratios from optical recombination lines. We have...[Show more]
|Collections||ANU Research Publications|
|Source:||Monthly Notices of the Royal Astronomical Society|
|Access Rights:||Open Access|
|01_Garcia-Rojas_C%2FO_ratios_in_planetary_2018.pdf||3.56 MB||Adobe PDF|
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