A Herschel study of Planetary Nebulae
G. C. Van de Steene, K. M. Exter, P. A. M. van Hoof, T. L. Lim, M. J., Barlow, M. Matsuura, T. Ueta, and the MESS Consortium
TL;DR
This paper uses Herschel space telescope images to analyze dust shells and temperature structures in planetary nebulae, revealing complex internal extinction effects despite their advanced evolutionary stage.
Contribution
It provides detailed infrared imaging and temperature mapping of planetary nebulae dust shells, highlighting the importance of internal UV extinction.
Findings
Rich dust temperature structures observed
Internal UV extinction remains significant
Complex dust shell morphology identified
Abstract
We present Herschel PACS and SPIRE images of the dust shells around the planetary nebulae NGC 650, NGC 6853, and NGC 6720, as well as images showing the dust temperature in their shells. The latter shows a rich structure, which indicates that internal extinction in the UV is important despite the highly evolved status of the nebulae.
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