Abundances of Heavy Elements in PNe and AGB Model Predictions

Details Abundances of Heavy Elements in PNe and AGB Model Predictions Abundances of Heavy Elements in PNe and AGB Model Predictions

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1001..154p&link_type=abstract

IXTH TORINO WORKSHOP ON EVOLUTION AND NUCLEOSYNTHESIS IN AGB STARS AND THE IIND PERUGIA WORKSHOP ON NUCLEAR ASTROPHYSICS. AIP C

Astronomy and Astrophysics

Astrophysics

1

Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, Giant And Subgiant Stars, Abundances, Chemical Composition, Planetary Nebulae

Scientific paper

During the AGB phase of low and intermediate mass stars heavy s-process elements are produced and dredged-up in the envelope. In the following Planetary Nebula phase part of the AGB envelope will form the nebula around the hot central star, carrying the s-process signature unchanged. Recently, heavy elements have been observed is many Planetary Nebulae, providing a new tool to analyze the s-process nucleosynthesis working in the AGB stars. In this paper we present s-process predictions for a large spread of stellar masses, metallicities and 13C-pocket efficiencies. Theoretical results are compared with the most recent observations in PNe, finding a general good agreement.

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