A revised parallel chemical evolution model with pre-enriched delayed second infall explains the Milky Way's alpha-element abundance patterns, co-evolution phase, and old low-alpha stars from APOGEE data.
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Palomar 15 has [Fe/H] = -1.94 dex with no significant abundance spreads, alpha-element patterns typical of outer halo objects, and one star showing elevated Na and Al suggestive of multiple populations.
Star formation model choice in galaxy simulations controls giant molecular cloud lifetimes, yielding 20-30 Myr with sink particles versus over 200 Myr with the gravo-thermo-turbulent prescription.
citing papers explorer
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Co-evolution of the Milky Way high- and low-{\alpha} sequences with chemical evolution models
A revised parallel chemical evolution model with pre-enriched delayed second infall explains the Milky Way's alpha-element abundance patterns, co-evolution phase, and old low-alpha stars from APOGEE data.
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Chemical composition of the outer halo globular cluster Palomar 15
Palomar 15 has [Fe/H] = -1.94 dex with no significant abundance spreads, alpha-element patterns typical of outer halo objects, and one star showing elevated Na and Al suggestive of multiple populations.
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From short-lived to long-lived clouds: impact of star formation models on giant molecular cloud evolution in simulations of an NGC 300-like galaxy
Star formation model choice in galaxy simulations controls giant molecular cloud lifetimes, yielding 20-30 Myr with sink particles versus over 200 Myr with the gravo-thermo-turbulent prescription.