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The Chemical Evolution of Milky Way Satellite Galaxies from Keck/DEIMOS Multi-Element Abundance Measurements

Kirby, Evan N. and Cohen, Judith G. (2012) The Chemical Evolution of Milky Way Satellite Galaxies from Keck/DEIMOS Multi-Element Abundance Measurements. In: Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way. Astronomical Society of the Pacific Conference Series. Vol.458. Astronomical Society of the Pacific , San Francisco, CA, pp. 329-330. ISBN 978-1-58381-798-8.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Kirby, Evan N.0000-0001-6196-5162
Cohen, Judith G.0000-0002-8039-4673
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.
Funding AgencyGrant Number
NASA Hubble Fellowship51256.01
NASANAS 5-26555
Series Name:Astronomical Society of the Pacific Conference Series
Record Number:CaltechAUTHORS:20121022-131846051
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35010
Deposited By: Jason Perez
Deposited On:22 Oct 2012 23:05
Last Modified:03 Oct 2019 04:24

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