Tools
Tools
Kisku, S, Schiavon, RP, Horta, D, Mason, AC, Mackereth, JT, Hasselquist, S, Garcia-Hernandez, DA, Bizyaev, D, Brownstein, JR, Lane, RR, Minniti, D, Pan, K and Roman-Lopes, A (2021) An enquiry on the origins of N-rich stars in the inner Galaxy based on APOGEE chemical compositions. Monthly Notices of the Royal Astronomical Society, 504 (2). pp. 1657-1667. ISSN 0035-8711
|
Text
An enquiry on the origins of N rich starts in the inner galaxy based on APOGEE chemical compositions.pdf - Published Version Download (2MB) | Preview |
Abstract
Recent evidence based on APOGEE data for stars within a few kpc of the Galactic Centre suggests that dissolved globular clusters (GCs) contribute significantly to the stellar mass budget of the inner halo. In this paper, we enquire into the origins of tracers of GC dissolution, N-rich stars, that are located in the inner 4 kpc of the Milky Way. From an analysis of the chemical compositions of these stars, we establish that about 30 per cent of the N-rich stars previously identified in the inner Galaxy may have an accreted origin. This result is confirmed by an analysis of the kinematic properties of our sample. The specific frequency of N-rich stars is quite large in the accreted population, exceeding that of its in situ counterparts by near an order of magnitude, in disagreement with predictions from numerical simulations. We hope that our numbers provide a useful test to models of GC formation and destruction.
| Item Type: | Article |
|---|---|
| Additional Information: | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
| Uncontrolled Keywords: | Astronomy & Astrophysics; DATA RELEASE; ELEMENT ABUNDANCES; EVOLUTION; Galaxy: abundances; Galaxy: bulge; Galaxy: formation; Galaxy: kinematics and dynamics; globular clusters: general; GLOBULAR-CLUSTERS; HALO STARS; HOMOGENEOUS ANALYSIS; METALLICITY; MILKY-WAY; Physical Sciences; POOR FIELD STARS; Science & Technology; STELLAR POPULATIONS; Science & Technology; Physical Sciences; Astronomy & Astrophysics; Galaxy: abundances; Galaxy: bulge; Galaxy: formation; globular clusters: general; Galaxy: kinematics and dynamics; POOR FIELD STARS; MILKY-WAY; GLOBULAR-CLUSTERS; HOMOGENEOUS ANALYSIS; STELLAR POPULATIONS; ELEMENT ABUNDANCES; DATA RELEASE; HALO STARS; METALLICITY; EVOLUTION; Science & Technology; Physical Sciences; Astronomy & Astrophysics; Galaxy: abundances; Galaxy: bulge; Galaxy: formation; globular clusters: general; Galaxy: kinematics and dynamics; GLOBULAR-CLUSTER MASS; DATA RELEASES 13; MILKY-WAY; STELLAR HALO; ELEMENT ABUNDANCES; METALLICITY; POPULATIONS; EVOLUTION; TELESCOPE; PARAMETER; astro-ph.GA; astro-ph.GA; astro-ph.SR; 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: | 10 Oct 2022 14:11 |
| Last Modified: | 10 Oct 2022 14:15 |
| DOI or ID number: | 10.1093/mnras/stab525 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/17785 |
 |
View Item |