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

Siân G. Phillips, Ricardo P. Schiavon, J. Ted MacKereth, Carlos Allende Prieto, Borja Anguiano, Rachael L. Beaton, Roger E. Cohen, D. A. García-Hernández, Douglas Geisler, Danny Horta, Henrik Jönsson, Shobhit Kisku, Richard R. Lane, Steven R. Majewski, Andrew Mason, Dante Minniti, Mathias Schultheis, Dominic Taylor

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

Recent results from chemical tagging studies using Apache Point Observatory Galactic Evolution Experiment data suggest a strong link between the chemical abundance patterns of stars found within globular clusters (GC), 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 GC 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 GCs, and provides support to the hypothesis that field N-rich stars identified by various groups have a GC origin.

Idioma originalInglés
Páginas (desde-hasta)3727-3733
Número de páginas7
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen510
N.º3
DOI
EstadoPublicada - 1 mar. 2022

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ciencias planetarias y espacial

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