Following the cosmic evolution of pristine gas. I. Implications for Milky Way halo stars

Journal Article · Sun Jan 01 00:00:00 EST 2017 · Astrophysical Journal

DOI:https://doi.org/10.3847/1538-4357/834/1/23· OSTI ID:22869587

Sarmento, Richard; Scannapieco, Evan ^[1]; Pan, Liubin ^[2]

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1. School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ, 85287-1404 (United States)
2. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)

We make use of a new subgrid model of turbulent mixing to accurately follow the cosmological evolution of the first stars, the mixing of their supernova (SN) ejecta, and the impact on the chemical composition of the Galactic Halo. Using the cosmological adaptive mesh refinement code ramses, we implement a model for the pollution of pristine gas as described in Pan et al. Tracking the metallicity of Pop III stars with metallicities below a critical value allows us to account for the fraction of Z

• OSTI ID: 22869587
• Journal Information: Astrophysical Journal, Vol. 834, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CARBON STARS
COMPUTERIZED SIMULATION
ELEMENT ABUNDANCE
FORECASTING
GALACTIC EVOLUTION
METALLICITY
MILKY WAY
NEUTRON REACTIONS
SPACE
SPATIAL DISTRIBUTION
SUPERNOVAE
TELESCOPES
TURBULENCE
UNIVERSE