Angular momentum, accretion and radial flows in chemodynamical models of spiral galaxies

Abstract

Gas accretion and radial flows are key ingredients of the chemical evolution of spiral galaxies. They are also tightly linked to each other (accretion drives radial flows, due to angular momentum conservation) and should therefore be modelled simultaneously. We summarise an algorithm that can be used to consistently compute accretion profiles, radial flows and abundance gradients under quite general conditions and we describe illustrative applications to the Milky Way. We find that gas-phase abundance gradients strongly depend on the angular momentum of the accreting material and, in the outer regions, they are significantly affected by the choice of boundary conditions.

arXiv comment4 pages, 2 figures. Proceedings of the 592 WE-Heraeus Seminar. To appear in Astronomische Nachricthen, special issue "Reconstructing the Milky Way's history: spectroscopic surveys, asteroseismology and chemodynamical models", Guest Editors C. Chiappini, J. Montalban and M. Steffen

References in corpus (13)

• The Global Schmidt Law in Star Forming Galaxies
• The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
• Chemical evolution with radial mixing
• Abundance Gradients and the Formation of the Milky Way
• Quantifying the uncertainties of chemical evolution studies. II. Stellar yields
• Chemo-spectrophotometric evolution of spiral galaxies: I. The model and the Milky Way
• Mass models of the Milky Way
• Moving mesh cosmology: tracing cosmological gas accretion
• The distribution of the ISM in the Milky Way A three-dimensional large-scale model
• Constraints on the distribution of supernova remnants with Galactocentric radius
• On the alpha-element gradients of the Galactic thin disk using Cepheids
• Accretion, radial flows and abundance gradients in spiral galaxies
• Radial Flows and Angular Momentum Conservation in Galactic Chemical Evolution

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