The galactic disk distribution of dust emission features in planetary nebulae
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 PN...
Main Authors: | , |
---|---|
Format: | Conference item |
Published: |
1999
|