Milky Way versus Andromeda: a tale of two disks

@article{Yin2009MilkyWV,
  title={Milky Way versus Andromeda: a tale of two disks},
  author={J. Yin and J. L. Hou and Nikos Prantzos and Samuel Boissier and Rui-xiang Chang and Shiyin Shen and B. Zhangh},
  journal={Astronomy and Astrophysics},
  year={2009},
  volume={505},
  pages={497-508}
}
Aims. We study the chemical evolution of the disks of the Milky Way (MW) and of Andromeda (M 31), to identify the common properties and differences between the two major galaxies of the Local Group. Methods. We use a large set of observational data for M 31, including observations of the star formation rate (SFR) and gas profiles, as well as stellar metallicity distributions along its disk. When expressed in terms of the corresponding disk scale lengths, we show that the observed radial… 

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