2D chemical evolution model: The impact of Galactic disc asymmetries on azimuthal chemical abundance variations

  title={2D chemical evolution model: The impact of Galactic disc asymmetries on azimuthal chemical abundance variations},
  author={Emanuele Spitoni and Gabriele Cescutti and Ivan Minchev and Francesca Matteucci and V{\'i}ctor Silva Aguirre and Marie Martig and Giuseppe Bono and Cristina Chiappini},
  journal={Astronomy \& Astrophysics},
Context. Galactic disc chemical evolution models generally ignore azimuthal surface density variation that can introduce chemical abundance azimuthal gradients. Recent observations, however, have revealed chemical abundance changes with azimuth in the gas and stellar components of both the Milky Way and external galaxies.Aims. Our aim is to quantify the effects of spiral arm density fluctuations on the azimuthal variations of the oxygen and iron abundances in disc galaxies.Methods.We developed… 

2D-Galactic chemical evolution: the role of the spiral density wave

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The metallicity structure of the Milky Way disk stems from the chemodynamical evolutionary history of the Galaxy. We use the National Radio Astronomy Observatory Karl G. Jansky Very Large Array to

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The Chemical Evolution Carousel of Spiral Galaxies: Azimuthal Variations of Oxygen Abundance in NGC1365

The spatial distribution of oxygen in the interstellar medium of galaxies is the key to understanding how efficiently metals that are synthesized in massive stars can be redistributed across a


Elemental abundance patterns in the Galactic disk constrain theories of the formation and evolution of the Milky Way. H ii region abundances are the result of billions of years of chemical evolution.

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In this paper we adopt a chemical evolution model, which is an improved version of the Chiappini, Matteucci, & Gratton model, assuming two main accretion episodes for the formation of the Galaxy, the

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Stellar migration in Galactic disks has been the subject of several investigations in the past years. However, its impact on the chemical evolution of the Milky Way still needs to be fully

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Context. Galactic chemical evolution models are useful tools for interpreting the large body of high-quality observational data on the chemical composition of stars and gas in galaxies that have

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Understanding the nature of spiral structure in disk galaxies is one of the main, and still unsolved, questions in galactic astronomy. However, theoretical works are proposing new testable


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