Galactic chemical evolution

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

Abstract

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.

Citation

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. 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
• Public URL: https://hull-repository.worktribe.com/output/452205
• Publisher URL: http://www.sea-astronomia.es/drupal/sites/default/files/archivos/proceedings12/plenarias
• Related Public URLs: https://www.sea-astronomia.es/publicaciones/proceeding
• Contract Date: Jun 9, 2017