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Galactic chemical evolution

Mollá, Mercedes; Cavichia, Oscar; Costa, Roberto Dell’Aglio Dias da; Gibson, Brad K.; Díaz, Ángeles I.


Mercedes Mollá

Oscar Cavichia

Roberto Dell’Aglio Dias da Costa

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Professor Brad Gibson
Head of Dept, Physics & Maths; Director, E.A. Milne Centre for Astrophysics

Ángeles I. Díaz


We analyze the evolution of oxygen abundance radial gradients resulting from our chemical evolution models calculated with different prescriptions for the star formation rate (SFR) and for the gas infall rate, in order to assess their respective roles in shaping gradients. We also compare with cosmological simulations and confront all with recent observational datasets, in particular with abundances inferred from planetary nebulae. We demonstrate the critical importance in isolating the specific radial range over which a gradient is measured, in order for their temporal evolution to be useful indicators of disk growth with redshift.


Mollá, M., Cavichia, O., Costa, R. D. D. D., Gibson, B. K., & Díaz, Á. I. (in press). Galactic chemical evolution. In Highlights of Spanish astrophysics IX. Barcelona: Sociedad Española de Astronomía

Acceptance Date Sep 5, 2018
Online Publication Date Sep 1, 2017
Deposit Date Jun 9, 2017
Publicly Available Date Sep 1, 2017
Journal Highlights on Spanish astrophysics IX
Publisher Sociedad Española de Astronomía
Book Title Highlights of Spanish astrophysics IX
Keywords Star formation
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