Stellar yields from metal-rich asymptotic giant branch models
Creators
- 1. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia)
- 2. Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University, VIC 3800 (Australia)
Description
We present new theoretical stellar yields and surface abundances for three grids of metal-rich asymptotic giant branch (AGB) models. Post-processing nucleosynthesis results are presented for stellar models with initial masses between 1 M ☉ and 7.5 M ☉ for Z = 0.007, and 1 M ☉ and 8 M ☉ for Z = 0.014 (solar) and Z = 0.03. We include stellar surface abundances as a function of thermal pulse on the AGB for elements from C to Bi and for a selection of isotopic ratios for elements up to Fe and Ni (e.g., /), which can be obtained from observations of molecules in stars and from the laboratory analysis of meteoritic stardust grains. Ratios of elemental abundances of He/H, C/O, and N/O are also included, which are useful for direct comparison to observations of AGB stars and their progeny, including planetary nebulae. The integrated elemental stellar yields are presented for each model in the grid for hydrogen, helium, and all stable elements from C to Bi. Yields of Li are also included for intermediate-mass models with hot bottom burning. We present the first slow neutron-capture (s-process) yields for super solar metallicity AGB stars with Z = 0.03, and the first complete s-process yields for models more massive than 6 M ☉ at all three metallicities.
Availability note (English)
Available from http://dx.doi.org/10.3847/0004-637X/825/1/26Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 825
- Journal Issue
- 1
- Journal Page Range
- [22 p.]
- ISSN
- 0004-637X
- CODEN
- ASJOAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 51030777
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- CARBON 12; CARBON 13; COMPARATIVE EVALUATIONS; GALAXIES; HELIUM; HYDROGEN; ISOTOPE RATIO; METALLICITY; MOLECULES; NEUTRON REACTIONS; NUCLEOSYNTHESIS; PLANETARY NEBULAE; S PROCESS; SLOW NEUTRONS; STARS; SURFACES
- Descriptors DEC
- BARYON REACTIONS; BARYONS; CARBON ISOTOPES; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ELEMENTS; EVALUATION; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EVOLUTION; FERMIONS; FLUIDS; GASES; HADRON REACTIONS; HADRONS; ISOTOPES; LIGHT NUCLEI; NEBULAE; NEUTRONS; NONMETALS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEONS; RARE GASES; STABLE ISOTOPES; STAR EVOLUTION; SYNTHESIS