APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris

José G. Fernández-Trincado; Timothy C. Beers; Anna B.A. Queiroz; Cristina Chiappini; Dante Minniti; Beatriz Barbuy; Steven R. Majewski; Mario Ortigoza-Urdaneta; Christian Moni Bidin; Annie C. Robin; Edmundo Moreno; Leonardo Chaves-Velasquez; Sandro Villanova; Richard R. Lane; Kaike Pan; Dmitry Bizyaev

doi:10.3847/2041-8213/ac225b

APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris

José G. Fernández-Trincado, Timothy C. Beers, Anna B.A. Queiroz, Cristina Chiappini, Dante Minniti, Beatriz Barbuy, Steven R. Majewski, Mario Ortigoza-Urdaneta, Christian Moni Bidin, Annie C. Robin, Edmundo Moreno, Leonardo Chaves-Velasquez, Sandro Villanova, Richard R. Lane, Kaike Pan, Dmitry Bizyaev

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12 Citations (Scopus)

Abstract

We report the discovery of a new, chemically distinct population of relatively high-metallicity ([Fe/H] > -0.7) red giant stars with super-solar [N/Fe] (⪆+0.75) identified within the bulge, disk, and halo of the Milky Way. This sample of stars was observed during the second phase of the Apache Point Observatory Galactic Evolution Experiment (APOGEE-2); the spectra of these stars are part of the seventeenth Data Release (DR 17) of the Sloan Digital Sky Survey. We hypothesize that this newly identified population was formed in a variety of progenitors, and is likely made up of either fully or partially destroyed metal-rich globular clusters, which we refer to as globular cluster debris (GCD), identified by their unusual photospheric nitrogen abundances. It is likely that some of the GCD stars were probable members of the Gaia-Enceladus-Sausage accretion event, along with clusters formed in situ.

Original language	English
Article number	L37
Journal	Astrophysical Journal Letters
Volume	918
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ac225b
Publication status	Published - 10 Sept 2021

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Fernández-Trincado, J. G., Beers, T. C., Queiroz, A. B. A., Chiappini, C., Minniti, D., Barbuy, B., Majewski, S. R., Ortigoza-Urdaneta, M., Moni Bidin, C., Robin, A. C., Moreno, E., Chaves-Velasquez, L., Villanova, S., Lane, R. R., Pan, K., & Bizyaev, D. (2021). APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris. Astrophysical Journal Letters, 918(2), Article L37. https://doi.org/10.3847/2041-8213/ac225b

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title = "APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris",

abstract = "We report the discovery of a new, chemically distinct population of relatively high-metallicity ([Fe/H] > -0.7) red giant stars with super-solar [N/Fe] (⪆+0.75) identified within the bulge, disk, and halo of the Milky Way. This sample of stars was observed during the second phase of the Apache Point Observatory Galactic Evolution Experiment (APOGEE-2); the spectra of these stars are part of the seventeenth Data Release (DR 17) of the Sloan Digital Sky Survey. We hypothesize that this newly identified population was formed in a variety of progenitors, and is likely made up of either fully or partially destroyed metal-rich globular clusters, which we refer to as globular cluster debris (GCD), identified by their unusual photospheric nitrogen abundances. It is likely that some of the GCD stars were probable members of the Gaia-Enceladus-Sausage accretion event, along with clusters formed in situ.",

author = "Fern{\'a}ndez-Trincado, {Jos{\'e} G.} and Beers, {Timothy C.} and Queiroz, {Anna B.A.} and Cristina Chiappini and Dante Minniti and Beatriz Barbuy and Majewski, {Steven R.} and Mario Ortigoza-Urdaneta and {Moni Bidin}, Christian and Robin, {Annie C.} and Edmundo Moreno and Leonardo Chaves-Velasquez and Sandro Villanova and Lane, {Richard R.} and Kaike Pan and Dmitry Bizyaev",

year = "2021",

month = sep,

day = "10",

doi = "10.3847/2041-8213/ac225b",

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Fernández-Trincado, JG, Beers, TC, Queiroz, ABA, Chiappini, C, Minniti, D, Barbuy, B, Majewski, SR, Ortigoza-Urdaneta, M, Moni Bidin, C, Robin, AC, Moreno, E, Chaves-Velasquez, L, Villanova, S, Lane, RR, Pan, K & Bizyaev, D 2021, 'APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris', Astrophysical Journal Letters, vol. 918, no. 2, L37. https://doi.org/10.3847/2041-8213/ac225b

TY - JOUR

T1 - APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris

AU - Fernández-Trincado, José G.

AU - Beers, Timothy C.

AU - Queiroz, Anna B.A.

AU - Chiappini, Cristina

AU - Minniti, Dante

AU - Barbuy, Beatriz

AU - Majewski, Steven R.

AU - Ortigoza-Urdaneta, Mario

AU - Moni Bidin, Christian

AU - Robin, Annie C.

AU - Moreno, Edmundo

AU - Chaves-Velasquez, Leonardo

AU - Villanova, Sandro

AU - Lane, Richard R.

AU - Pan, Kaike

AU - Bizyaev, Dmitry

PY - 2021/9/10

Y1 - 2021/9/10

N2 - We report the discovery of a new, chemically distinct population of relatively high-metallicity ([Fe/H] > -0.7) red giant stars with super-solar [N/Fe] (⪆+0.75) identified within the bulge, disk, and halo of the Milky Way. This sample of stars was observed during the second phase of the Apache Point Observatory Galactic Evolution Experiment (APOGEE-2); the spectra of these stars are part of the seventeenth Data Release (DR 17) of the Sloan Digital Sky Survey. We hypothesize that this newly identified population was formed in a variety of progenitors, and is likely made up of either fully or partially destroyed metal-rich globular clusters, which we refer to as globular cluster debris (GCD), identified by their unusual photospheric nitrogen abundances. It is likely that some of the GCD stars were probable members of the Gaia-Enceladus-Sausage accretion event, along with clusters formed in situ.

AB - We report the discovery of a new, chemically distinct population of relatively high-metallicity ([Fe/H] > -0.7) red giant stars with super-solar [N/Fe] (⪆+0.75) identified within the bulge, disk, and halo of the Milky Way. This sample of stars was observed during the second phase of the Apache Point Observatory Galactic Evolution Experiment (APOGEE-2); the spectra of these stars are part of the seventeenth Data Release (DR 17) of the Sloan Digital Sky Survey. We hypothesize that this newly identified population was formed in a variety of progenitors, and is likely made up of either fully or partially destroyed metal-rich globular clusters, which we refer to as globular cluster debris (GCD), identified by their unusual photospheric nitrogen abundances. It is likely that some of the GCD stars were probable members of the Gaia-Enceladus-Sausage accretion event, along with clusters formed in situ.

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VL - 918

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

M1 - L37

ER -

APOGEE-2 Discovery of a Large Population of Relatively High-metallicity Globular Cluster Debris

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