APOGEE detection of N-rich stars in the tidal tails of Palomar 5-Reference-Cited by-同舟云学术

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

Published:2021-12-04 Issue:3 Volume:510 Page:3727-3733
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Phillips Siân G¹^ORCID,Schiavon Ricardo P¹,Mackereth J Ted²³^ORCID,Allende Prieto Carlos⁴⁵,Anguiano Borja⁶,Beaton Rachael L⁷⁸,Cohen Roger E⁹,García-Hernández D A⁴⁵,Geisler Douglas¹⁰¹¹¹²,Horta Danny¹^ORCID,Jönsson Henrik¹³^ORCID,Kisku Shobhit¹,Lane Richard R¹⁴,Majewski Steven R⁶,Mason Andrew¹,Minniti Dante¹⁵¹⁶,Schultheis Mathias¹⁷,Taylor Dominic¹

Affiliation:

1. Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool L3 5RF, UK

2. Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, ON, M5S 3H8, Canada

3. Dunlap Institute for Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H4, Canada

4. Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Spain

5. Universidad de La Laguna (ULL), Departamento de Astrofísica, E-38206 La Laguna, Spain

6. Department of Astronomy, University of Virginia, Charlottesville, VA 22904-4325, USA

7. The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA

8. Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA

9. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA

10. Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, Concepción, Chile

11. Instituto de Investigación Multidisciplinario en Ciencia y Tecnología, Universidad de La Serena. Avenida Raúl Bitrán S/N, La Serena, Chile

12. Departamento de Astronomía, Facultad de Ciencias, Universidad de La Serena. Av. Juan Cisternas 1200, La Serena, Chile

13. Materials Science and Applied Mathematics, Malmö University, SE-205 06 Malmö, Sweden

14. Instituto de Astronomía y Ciencias Planetarias de Atacama, Universidad de Atacama, Copayapu 485, Copiapó, Chile

15. Departamento de Ciencias Físicas, Universidad Andres Bello, Fernández Concha 700 Las Condes, Santiago, Chile

16. Vatican Observatory, I-V00120 Vatican City State, Italy

17. University Côte d’Azur, Observatory of the Côte d’Azur, CNRS, Lagrange Laboratory, Observatory Bd, CS 34229, F-06304 Nice cedex 4, France

Abstract

ABSTRACT 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.

Funder

European Regional Development Fund

NSF

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