Chemo-dynamical signatures in simulated Milky Way-like galaxies
Abstract
We have investigated the chemo-dynamical evolution of a Milky Way-like disk galaxy, AqC4, produced by a cosmological simulation integrating a sub-resolution ISM model. We evidence a global inside-out and upside-down disk evolution, that is consistent with a scenario where the ``thin disk'' stars are formed from the accreted gas close to the galactic plane, while the older ``thick disk'' stars are originated in situ at higher heights. Also, the bar appears the most effective heating mechanism in the inner disk. Finally, no significant metallicity-rotation correlation has been observed, in spite of the presence of a negative [Fe/H] radial gradient.
- Publication:
-
Astrometry and Astrophysics in the Gaia Sky
- Pub Date:
- April 2018
- DOI:
- 10.1017/S1743921317006019
- Bibcode:
- 2018IAUS..330..263S
- Keywords:
-
- Galaxy: abundance;
- evolution;
- structure;
- kinematics and dynamics