Characterizing stellar halo populations II: the age gradient in blue horizontal-branch stars
The distribution of Milky Way halo blue horizontal-branch (BHB) stars is examined using action-based extended distribution functions (EDFs) that describe the locations of stars in phase space, metallicity, and age. The parameters of the EDFs are fitted using stars observed in the Sloan Extension for...
| Main Authors: | , , |
|---|---|
| Format: | Journal article |
| Published: |
Oxford University Press
2016
|