A Lagrangian model with mild radial gas flows (1.5 km/s) simultaneously reproduces the Milky Way's [O/Fe]-[Fe/H] distribution, stellar surface density profile, abundance gradients, and age-abundance relations under a two-infall scenario.
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New VLT observations of He I* absorbers yield a primordial ³He/⁴He ratio of (1.15^{+0.24}_{-0.21})×10^{-4} consistent with standard Big Bang nucleosynthesis, plus an updated stellar yield scaling factor.
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Chemical evolution of the Milky Way disc with radial gas flows: a Lagrangian approach
A Lagrangian model with mild radial gas flows (1.5 km/s) simultaneously reproduces the Milky Way's [O/Fe]-[Fe/H] distribution, stellar surface density profile, abundance gradients, and age-abundance relations under a two-infall scenario.
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Towards a measurement of the primordial helium isotope ratio
New VLT observations of He I* absorbers yield a primordial ³He/⁴He ratio of (1.15^{+0.24}_{-0.21})×10^{-4} consistent with standard Big Bang nucleosynthesis, plus an updated stellar yield scaling factor.