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| Paper: |
The Chemical Evolution of Milky Way Satellite Galaxies from Keck/DEIMOS Multi-Element Abundance Measurements |
| Volume: |
458, Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way |
| Page: |
329 |
| Authors: |
Kirby, E. N.; Cohen, J. G. |
| Abstract: |
A Keck/DEIMOS spectroscopic campaign of eight Milky Way (MW) dwarf
spheroidal (dSph) satellite galaxies has generated spectral
synthesis-based abundance measurements for nearly 3000 stars. The
elements measured are Fe and the α elements Mg, Si, Ca, and Ti.
The dSph metallicity distributions show that the histories of the less
luminous dSphs were marked by massive amounts of gas loss. The
[α/Fe] distributions indicate that the early star formation
histories of most dSphs were very similar and that Type Ia supernova
ejecta contributed to the abundances of all but the most metal-poor
([Fe/H] < –2.5) stars. |
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