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APOGEE Chemical Anomalies discovered everywhere in the Milky Way: Giant stars with GC-like abundance patterns

Published online by Cambridge University Press:  02 August 2018

J. G. Fernández-Trincado
J. G. Fernández-Trincado*
Affiliation:
Departamento de AstronomíaDepartamento de Astronomía, Universidad de Concepción, Casilla 160-C, Concepción, Chile email: jfernandezt@astro-udec.cl and/or jfernandezt87@gmail.com
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Abstract

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We report the discovery by APOGEE of five mildly metal-poor ([Fe/H] >−1) anomalous giant stars in the halo/disk/bulge Galaxy with abundances of C, N, and Al that are typically found in globular cluster stars (GCs, see e.g. Carretta et al. 2009a; Mészáros et al. 2015; Pancino et al. 2017; Schiavon et al. 2017a; Tang et al. 2017) and in the inner Galaxy (e.g., Schiavon et al. 2017b; Recio-Blanco et al. 2017) simultaneously with atypical abundances of Mg (Mg-poor: [Mg/Fe] < 0) never before seen in Milky Way (MW) GCs, dwarf galaxies (see Hasselquist et al. 2017) neither in MW field stars. Additionally, four new moderately metal-poor ([Fe/H] <−1) anomalous giant stars (i.e., N-rich, Al-rich and C-poor) with trustly GCs second-generation like chemical patterns were identified within the Galactic bulge, halo and disk field.

Keywords

Galaxy: structurestars: abundancesstars: Population IIglobular clusters: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 285 - 287
Copyright
Copyright © International Astronomical Union 2018 

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