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Accurate Stellar Kinematics at Faint Magnitudes: application to the Bootes~I dwarf spheroidal galaxy
Sergey E. Koposov, G. Gilmore, M. G. Walker +12
We develop, implement and characterise an enhanced data reduction approach which delivers precise, accurate, radial velocities from moderate resolution spectroscopy with the fibre-…
The two metallicity groups of the globular cluster M22: a chemical perspective
A. F. Marino, C. Sneden, R. P. Kraft +11
We present a detailed chemical composition analysis of 35 red giant stars in the globular cluster M22. High resolution spectra for this study were obtained at five observatories, a…
The Case for the Dual Halo of the Milky Way
Timothy C. Beers, Daniela Carollo, Zeljko Ivezic +11
Carollo et al. have recently resolved the stellar population of the Milky Way halo into at least two distinct components, an inner halo and an outer halo. This result has been crit…
Carbon-Enhanced Metal-Poor Stars in the Inner and Outer Halo Components of the Milky Way
D. Carollo, T. C. Beers, J. Bovy +6
(Abridged) Carbon-enhanced metal-poor (CEMP) stars in the halo components of the Milky Way are explored, based on accurate determinations of the carbon-to-iron ([C/Fe]) abundance r…
Metal-Poor Stars and the Chemical Enrichment of the Universe
Anna Frebel, John E. Norris
Metal-poor stars hold the key to our understanding of the origin of the elements and the chemical evolution of the Universe. This chapter describes the process of discovery of thes…