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APOGEE detection of N-rich stars in the tidal tails of Palomar 5

Phillips, SG, Schiavon, RP, Mackereth, JT, Prieto, CA, Anguiano, B, Beaton, RL, Cohen, RE, Garcia-Hernandez, DA, Geisler, D, Horta, D, Jonsson, H, Kisku, S, Lane, RR, Majewski, SR, Mason, AC, Minniti, D, Schultheis, M and Taylor, D (2021) APOGEE detection of N-rich stars in the tidal tails of Palomar 5. Monthly Notices of the Royal Astronomical Society, 510 (3). pp. 3727-3733. ISSN 0035-8711

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Recent results from chemical tagging studies using APOGEE data suggest a strong link between the chemical abundance patterns of stars found within globular clusters, and chemically peculiar populations in the Galactic halo field. In this paper we analyse the chemical compositions of stars within the cluster body and tidal streams of Palomar 5, a globular cluster that is being tidally disrupted by interaction with the Galactic gravitational potential. We report the identification of nitrogen-rich (N-rich) stars both within and beyond the tidal radius of Palomar 5, with the latter being clearly aligned with the cluster tidal streams; this acts as confirmation that N-rich stars are lost to the Galactic halo from globular clusters, and provides support to the
hypothesis that field N-rich stars identified by various groups have a globular cluster origin.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords: Science & Technology; Physical Sciences; Astronomy & Astrophysics; Globular Clusters; GALACTIC GLOBULAR-CLUSTERS; FIELD STARS; MULTIPLE POPULATIONS; DATA RELEASE; HALO STARS; ABUNDANCES; PARAMETERS; TELESCOPE; DISCOVERY; CATALOG; astro-ph.GA; astro-ph.GA; 0201 Astronomical and Space Sciences; Astronomy & Astrophysics
Subjects: Q Science > QB Astronomy
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
SWORD Depositor: A Symplectic
Date Deposited: 06 Sep 2022 10:59
Last Modified: 06 Sep 2022 11:00
DOI or ID number: 10.1093/mnras/stab3532
URI: https://researchonline.ljmu.ac.uk/id/eprint/17511
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