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C/O ratios in planetary nebulae with dual-dust chemistry from faint optical recombination lines

Garcia-Rojas, J.; Delgado-Inglada, G.; Garcia-Hernandez, D. A.; Dell'Agli, F.; Lugaro, Maria; Karakas, Amanda; Rodriguez, M.


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]

CollectionsANU Research Publications
Date published: 2017-09-27
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stx2519
Access Rights: Open Access


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