The evolution of the Oxygen abundance radial gradient in the Milky Way Galaxy disk
M. Moll\'a, O. Cavichia, R.D.D Costa, W.J. Maciel, B.K. Gibson, A.I., D\'iaz
TL;DR
This paper reviews chemical evolution models of the Milky Way, focusing on how different assumptions affect the evolution of the oxygen abundance gradient and comparing models with observational data.
Contribution
It analyzes the impact of various stellar yields, infall laws, and star formation prescriptions on the oxygen gradient evolution in the Milky Way.
Findings
The oxygen abundance gradient evolves over time and relates to the SFR/infall ratio.
Models show different gradient behaviors depending on input assumptions.
Comparison with planetary nebulae data supports certain evolutionary scenarios.
Abstract
We review the state of our chemical evolution models for spiral and low mass galaxies. We analyze the consequences of using different stellar yields, infall rate laws and star formation prescriptions in the time/redshift evolution of the radial distributions of abundances, and other quantities as star formation rate or gas densities, in the Milky Way Galaxy; In particular we will study the evolution of the Oxygen abundance radial gradient analyzing its relation with the ratio SFR/infall. We also compare the results with our old chemical evolution models, cosmological simulations and with the existing data, mainly with the planetary nebulae abundances.
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