| |
 |
| Paper: |
Metallicity Gradients in Simulated Disk Galaxies |
| Volume: |
458, Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way |
| Page: |
241 |
| Authors: |
Pilkington, K.; Gibson, B. K. |
| Abstract: |
The stellar metallicity and abundance ratio gradients from the fiducial
late-type galaxy simulation of Stinson et al. (2010) are presented. Over
∼1–3 scalelengths, gradients are shown to
flatten with time, consistent with empirical evidence at high- and
low-redshifts. Kinematic effects, including radial migration,
though, flatten these intrinsicly steep gradients such that by redshift
z=0, the measured gradients of these (now) old stars are flatter than
their young counterparts, in contradiction to what is observed locally.
Conversely, the stellar [O/Fe] gradient is (to first order) robust
against migration, remaining fairly flat for both young and old
populations today. |
|
|
|
|
|
