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The galactic disk distribution of dust emission features in planetary nebulae

Abstract:

The properties of the carbon and oxygen chemical balance in planetary nebulae (PNe) are analysed through mid infrared spectroscopy of warm dust emission features in a sample of 72 objects. The adoption of a statistical distance scale shows that the galactic disk distribution of warm dust types in PNe is rather homogeneous with height over the galactic plane, and that there is a trend for the proportion of PNe with O rich dust signatures to decrease with galactocentric radius. Models of the ga...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
Journal:
ASYMPTOTIC GIANT BRANCH STARS
Issue:
191
Pages:
517-522
Publication date:
1999-01-01
Event title:
191st Symposium of the International-Astronomical-Union
ISSN:
0074-1809
Source identifiers:
28613
ISBN:
1886733902
Keywords:
Pubs id:
pubs:28613
UUID:
uuid:c30173b2-35ee-4453-8657-ced87018a0b4
Local pid:
pubs:28613
Deposit date:
2012-12-19

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