Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations

Disentangling the Galactic Halo with APOGEE. I. Chemical and Kinematical Investigation of Distinct Metal-poor Populations

We find two chemically distinct populations separated relatively cleanly in the [Fe/H]-[Mg/Fe] plane, but also distinguished in other chemical planes, among metal-poor stars (primarily with metallicities [Fe/H] < -0.9) observed by the Apache Point Observatory Galactic Evolution Experiment (APOGEE...

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Bibliographic Details
Main Authors: Hayes, Christian R., Majewski, Steven R., Shetrone, Matthew, Fernández-Alvar, Emma, Prieto, Carlos Allende, Schuster, William J., Carigi, Leticia, Cunha, Katia, Smith, Verne V., Sobeck, Jennifer, Almeida, Andres, Beers, Timothy C., Carrera, Ricardo, Fernández-Trincado, J. G., García-Hernández, D. A., Geisler, Doug, Lane, Richard R., Lucatello, Sara, Matthews, Allison M., Minniti, Dante, Nitschelm, Christian, Tang, Baitian, Tissera, Patricia B., Zamora, Olga
Other Authors: Univ Arizona, Steward Observ
Language:en
Published: IOP PUBLISHING LTD 2018
Subjects:
Galaxy: disk
Galaxy: evolution
Galaxy: formation
Galaxy: halo
stars: abundances
Online Access:http://hdl.handle.net/10150/626539
http://arizona.openrepository.com/arizona/handle/10150/626539

Internet

http://hdl.handle.net/10150/626539
http://arizona.openrepository.com/arizona/handle/10150/626539

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