Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-06T12:03:34.684Z Has data issue: false hasContentIssue false
  • English
  • Français

CLOUDY modeling of weird Far-IR emission in the central zone of the Helix Nebula

Published online by Cambridge University Press:  15 December 2006

Adrienne Dove  and
Angela Speck
Adrienne Dove
Affiliation:
Department of Physics & Astronomy, University of Missouri, Columbia, MO 65201, USA email: [email protected]
Angela Speck
Affiliation:
Department of Physics & Astronomy, University of Missouri, Columbia, MO 65201, USA email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present the results of CLOUDY modeling of the central zone of the Helix Nebula. Our aim was to match the observed, excess far-infrared emission. Our best fit models fill the central zone with 1$\mu$m-sized grains, with a gas-to-dust ratio of 500, where precise composition is unimportant. We speculate on the origin of these grains.

Keywords

(ISM:) planetary nebulae: individual (NGC 7293)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 389 - 390
Copyright
© 2006 International Astronomical Union