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APOGEE [C/N] Abundances Across the Galaxy: Migration and Infall from Red Giant Ages
Sten Hasselquist, Jon A. Holtzman, Matthew Shetrone +14
We present [C/N]-[Fe/H] abundance trends from the SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey, Data Release 14 (DR14), for red giant branch stars…
APOGEE DR14/DR15 Abundances in the Inner Milky Way
G. Zasowski, M. Schultheis, S. Hasselquist +14
We present an overview of the distributions of 11 elemental abundances in the Milky Way's inner regions, as traced by APOGEE stars released as part of SDSS Data Release 14/15 (DR14…
The assembly history of the Galactic inner halo inferred from alpha-patterns
Emma Fernández-Alvar, Patricia B. Tissera, Leticia Carigi +3
We explore the origin of the observed decline in [O/Fe] (and [Mg/Fe]) with Galactocentric distance for high-metallicity stars ([Fe/H] > -1.1), based on a sample of halo stars selec…
The metal-rich halo component extended in z: a characterization with Gaia DR2 and APOGEE
Emma Fernández-Alvar, J. G. Fernández-Trincado, Edmundo Moreno +12
We report an analysis of the metal-rich tail ([Fe/H] ) of halo stars located at distances from the Galactic plane up to kpc, observed by the Apache Point…
Disk-Like Chemistry of the Triangulum-Andromeda Overdensity as Seen by APOGEE
Christian R. Hayes, Steven R. Majewski, Sten Hasselquist +15
The nature of the Triangulum-Andromeda (TriAnd) system has been debated since the discovery of this distant, low-latitude Milky Way (MW) overdensity more than a decade ago. Explana…
J-PLUS: The Javalambre Photometric Local Universe Survey
A. J. Cenarro, M. Moles, D. Cristóbal-Hornillos +119
J-PLUS is an ongoing 12-band photometric optical survey, observing thousands of square degrees of the Northern hemisphere from the dedicated JAST/T80 telescope at the Observatorio…
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…
The Origin of the Milky Way's Halo Age Distribution
Daniela Carollo, Patricia B. Tissera, Timothy C. Beers +4
We present an analysis of the radial age gradients for the stellar halos of five Milky Way mass-sized systems simulated as part of the Aquarius Project. The halos show a diversity…
H-band discovery of additional Second-Generation stars in the Galactic Bulge Globular Cluster NGC 6522 as observed by APOGEE and Gaia
José G. Fernández-Trincado, O. Zamora, Diogo Souto +34
We present elemental abundance analysis of high-resolution spectra for five giant stars, deriving Fe, Mg, Al, C, N, O, Si and Ce abundances, and spatially located within the innerm…