A New Model of NGC 6210 to Solve its Abundance Discrepancy Problem

A New Model of NGC 6210 to Solve its Abundance Discrepancy Problem

We present a model that solves the abundance discrepancy problem for NGC 6210. The model proposes a high abundance of CNONe elements that lowers the temperature of the central parts of the nebula. The colder gas model reproduces the observed intensity of the strong [N ii] and [O iii] emission lines,...

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Veröffentlicht in:Proceedings of the International Astronomical Union 2016-10, Vol.12 (S323), p.337-338
Hauptverfasser: Escalante, V., Toalá, J. A.
Format: Artikel
Sprache:eng
Schlagworte:
Abundance
Astronomy
Contributed Papers
Diagnostic systems
Nebulae
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Zusammenfassung:We present a model that solves the abundance discrepancy problem for NGC 6210. The model proposes a high abundance of CNONe elements that lowers the temperature of the central parts of the nebula. The colder gas model reproduces the observed intensity of the strong [N ii] and [O iii] emission lines, and increases the predicted weak recombination lines towards their observed values. We examine how the usual nebular diagnostic line ratios depend on model abundances.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921317002113