Published July 1, 2016 | Version v1
Journal article

Stellar yields from metal-rich asymptotic giant branch models

  • 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., 12 C / 13 C ), 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/825/1/26

Additional details

Identifiers

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
825
Journal Issue
1
Journal Page Range
[22 p.]
ISSN
0004-637X
CODEN
ASJOAB