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CNO and F abundances in the barium star HD 123396
Alan Alves-Brito, Amanda Karakas, David Yong +2
[Abridged] Barium stars are moderately rare, chemically peculiar objects, which are believed to be the result of the pollution of an otherwise normal star by material from an evolv…
Spectra of globular clusters in the Sombrero galaxy: evidence for spectroscopic metallicity bimodality
Alan Alves-Brito, George K. T. Hau, Duncan A. Forbes +4
We present a large sample of over 200 integrated-light spectra of confirmed globular clusters (GCs) associated with the Sombrero (M104) galaxy taken with the DEIMOS instrument on t…
A First Constraint on the Thick Disk Scale Length: Differential Radial Abundances in K Giants at Galactocentric Radii 4, 8, and 12 kpc
T. Bensby, A. Alves-Brito, M. S. Oey +2
Based on high-resolution spectra obtained with the MIKE spectrograph on the Magellan telescopes we present detailed elemental abundances for 20 red giant stars in the outer Galacti…
Alpha element abundances and gradients in the Milky Way bulge from FLAMES-GIRAFFE spectra of 650 K giants
O. A. Gonzalez, M. Rejkuba, M. Zoccali +9
We obtained FLAMES-GIRAFFE spectra (R=22,500) at the ESO Very Large Telescope for 650 bulge red giant branch (RGB) stars and performed spectral synthesis to measure Mg, Ca, Ti, and…