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NGC 6302: high-ionization permitted lines. Applying X-SSN synthesis to VLT-UVES spectra

Published online by Cambridge University Press:  30 August 2012

Daniel Péquignot ,
Christophe Morisset  and
Simon Casassus
Daniel Péquignot
Affiliation:
LUTh, Observatoire de Paris-Meudon, France Daniel.Pequignot@obspm.fr
Christophe Morisset
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Mexico. Instituto de Astrofísica de Canárias, La Laguna, Tenerife, Spain.
Simon Casassus
Affiliation:
Universidad de Chile, Departamento de Astronomía, Chile.
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Abstract

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A preliminary VLT-UVES spectrum of NGC 6302 (Casassus et al. 2002, MN), which hosts one of the hottest PN nuclei known (T eff ~ 220000 K; Wright et al. 2011, MN), has been recently analysed by means of X-SSN, a spectrum synthesis code for nebulae (Morisset and Péquignot). Permitted recombination lines from highly-ionized species are detected/identified for the first time in a PN, and some of them probably for the first time in (astro)physics. The need for a homogeneous, high signal-to-noise UVES spectrum for NGC 6302 is advocated.

Keywords

Planetary nebula: individual (NGC 6302)ISM: abundancesatomic processes