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IFU spectroscopy of southern planetary nebulae IV: A physical model for IC 418

Dopita, Michael; Ali, Alaa; Sutherland, Ralph; Nicholls , David; Amer, Morsi A.

Description

We describe high spectral resolution, high dynamic range integral field spectroscopy of IC 418 covering the spectral range 3300–8950 Å and compare with earlier data. We determine line fluxes, derive chemical abundances, provide a spectrum of the central star and determine the shape of the nebular continuum. Using photoionization models, we derive the reddening function from the nebular continuum and recombination lines. The nebula has a very high inner ionization parameter. Consequently,...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/218114
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stx1166

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