Cited by 81Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, PhenomenaAstronomy and Astrophysical Research

The DOI matches its Crossref record; 39 of the 44 references it cites were found in a registry or an index.

Sodium content as a predictor of the advanced evolution of globular cluster stars

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Abstract

The asymptotic giant branch (AGB) phase is the final stage of nuclear burning for low-mass stars. Although Milky Way globular clusters are now known to harbour (at least) two generations of stars, they still provide relatively homogeneous samples of stars that are used to constrain stellar evolution theory. It is predicted by stellar models that the majority of cluster stars with masses around the current turn-off mass (that is, the mass of the stars that are currently leaving the main sequence phase) will evolve through the AGB phase. Here we report that all of the second-generation stars in the globular cluster NGC 6752--70 per cent of the cluster population--fail to reach the AGB phase. Through spectroscopic abundance measurements, we found that every AGB star in our sample has a low sodium abundance, indicating that they are exclusively first-generation stars. This implies that many clusters cannot reliably be used for star counts to test stellar evolution timescales if the AGB population is included. We have no clear explanation for this observation.

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Crossref · 10.1038/nature12191

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  • Star counts as a proxy for timescales suggest that the data argue against the reality of the breathing pulses.

    “Nevertheless, appealing again to star counts as a proxy for timescales, the data seem to argue against the reality of these pulses (Renzini & Fusi Pecci 1988; Caputo et al. 1989, but see also Campbell et al. 2013).”

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5 of the 44 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Buonanno, R., Corsi, C. E. & Fusi Pecci, F. The giant, asymptotic, and horizontal branches of globular clusters. II — Photographic photometry of the metal-poor clusters M15, M92, and NGC 5466. Astron. Astrophys. 145, 97–117 (1985)

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Metadata

Authors
Campbell, S. W., D’Orazi, V., Yong, D., Constantino, T. N., Lattanzio, J. C., Stancliffe, R. J., Angelou, G. C., Wylie-de Boer, E. C., & Grundahl, F.
Affiliations
  • Monash University (AU)
  • Australian National University (AU)
  • Aarhus University (DK)
Corresponding author
Campbell, Simon W.
Venue
Nature
Published
2013-05-29
Volume
498
Issue
7453
Pages
198-200
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2014992560
Cited by
81
References
44
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 4 · 2019: 6 · 2018: 7 · 2017: 12 · 2016: 11 · 2015: 15 · 2014: 8 · 2013: 5
FWCI
7.01
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Cineca Institutional Research Information System (Tor Vergata University) (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
Keywords
globular clusters, NGC 6752, second-generation stars, first-generation stars, sodium abundance, asymptotic giant branch, stellar evolution, red giant branch, stellar populations

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