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| Paper: |
Iron Depletion and Dust Features in Galactic PNe |
| Volume: |
445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Page: |
321 |
| Authors: |
Delgado-Inglada, G.; Rodríguez, M. |
| Abstract: |
We explore the relation between the iron abundances and the types of
dust grains in a sample of Galactic bulge and disk planetary nebulae
(PNe). Although all the PNe have low gaseous iron abundances,
consistent with iron depletion into dust grains, the range of values
covers two orders of magnitude. These differences in the iron
depletion factors could be related to different condensation
efficiencies of iron atoms into dust grains in C-rich and O-rich
environments. However, we do not find any significant correlation
with the presence of C-rich or O-rich dust grains, which argues for
similar iron depletion efficiencies in both environments. |
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