Published August 25, 2012
| Published
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The Chemical Evolution of Milky Way Satellite Galaxies from Keck/DEIMOS Multi-Element Abundance Measurements
- Creators
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Kirby, Evan N.
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Cohen, Judith G.
Chicago
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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 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 [/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.
Additional Information
© 2012 Astronomical Society of the Pacific. Support for this work was provided by NASA through Hubble Fellowship grant 51256.01 awarded to ENK by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555.Attached Files
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Additional details
- Eprint ID
- 35010
- Resolver ID
- CaltechAUTHORS:20121022-131846051
- NASA Hubble Fellowship
- 51256.01
- NASA
- NAS 5-26555
- Created
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2012-10-22Created from EPrint's datestamp field
- Updated
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2019-10-03Created from EPrint's last_modified field
- Series Name
- Astronomical Society of the Pacific Conference Series