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A chemical and kinematical analysis of the intermediate-age open cluster IC 166 from APOGEE and Gaia DR2
J. Schiappacasse-Ulloa, B. Tang, J. G. Fernández-Trincado +26
IC 166 is an intermediate-age open cluster ( Gyr) which lies in the transition zone of the metallicity gradient in the outer disc. Its location, combined with our very limi…
The Origin of the 300 km s Stream Near Segue 1
Sal Wanying Fu, Joshua D. Simon, Matthew Shetrone +12
We present a search for new members of the 300 km s stream (300S) near the dwarf galaxy Segue 1 using wide-field survey data. We identify 11 previously unknown bright stream…
Atypical Mg-poor Milky Way field stars with globular cluster second-generation like chemical patterns
J. G. Fernández-Trincado, O. Zamora, D. A. Garcia-Hernandez +48
We report the peculiar chemical abundance patterns of eleven atypical Milky Way (MW) field red giant stars observed by the Apache Point Observatory Galactic Evolution Experiment (A…
Abundances, Stellar Parameters, and Spectra From the SDSS-III/APOGEE Survey
Jon A. Holtzman, Matthew Shetrone, Jennifer A. Johnson +39
The SDSS-III/APOGEE survey operated from 2011-2014 using the APOGEE spectrograph, which collects high-resolution (R~22,500), near-IR (1.51-1.70 microns) spectra with a multiplexing…
Measuring Consistent Masses for 25 Milky Way Globular Clusters
Brian Kimmig, Anil Seth, Inese I. Ivans +4
We present central velocity dispersions, masses, mass to light ratios (s), and rotation strengths for 25 Galactic globular clusters. We derive radial velocities of 1951 stars…
Fluorine variations in the globular cluster NGC 6656 (M22): implications for internal enrichment timescales
Valentina D'Orazi, Sara Lucatello, Maria Lugaro +8
Observed chemical (anti)correlations in proton-capture elements among globular cluster stars are presently recognized as the signature of self-enrichment from now extinct, previous…