Stellar yields and abundances: new directions from planetary nebulae
Lugaro, Maria; Karakas, Amanda I.; Pignatari, Marco; Doherty, Carolyn L.
Amanda I. Karakas
Dr Marco Pignatari M.Pignatari@hull.ac.uk
Carolyn L. Doherty
Copyright © International Astronomical Union 2017. Planetary nebulae retain the signature of the nucleosynthesis and mixing events that occurred during the previous AGB phase. Observational signatures complement observations of AGB and post-AGB stars and their binary companions. The abundances of the elements heavier than iron such as Kr and Xe in planetary nebulae can be used to complement abundances of Sr/Y/Zr and Ba/La/Ce in AGB stars, respectively, to determine the operation of the slow neutron-capture process (the s process) in AGB stars. Additionally, observations of the Rb abundance in Type I planetary nebulae may allow us to infer the initial mass of the central star. Several noble gas components present in meteoritic stardust silicon carbide (SiC) grains are associated with implantation into the dust grains in the high-energy environment connected to the fast winds from the central stars during the planetary nebulae phase.
|Journal Article Type||Article|
|Publication Date||Oct 1, 2016|
|Journal||Proceedings of the International Astronomical Union|
|Publisher||Cambridge University Press (CUP)|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Lugaro, M., Karakas, A. I., Pignatari, M., & Doherty, C. L. (2016). Stellar yields and abundances: new directions from planetary nebulae. IAU symposium and colloquium proceedings series / International Astronomical Union. Symposium, 12(S323), 86-94. https://doi.org/10.1017/s1743921317001247|
You might also like
Chromium Nucleosynthesis and Silicon-Carbon Shell Mergers in Massive Stars
Heavy Elements Nucleosynthesis on Accreting White Dwarfs Surface: Seeding the p-Process