Role of host galaxy in the formation of multiple stellar populations
- Even after decades of research, the origin of multiple stellar populations in globular clusters (GCs) remains enigmatic. The question as to whether the galaxy environment plays a role in their formation remains unanswered. To that extent, we analysed two classical (>10 Gyr old) Large Magellanic Cloud GCs, NGC 1786 and NGC 1898, using imaging data from Hubble Space Telescope to compare and contrast them with ancient Galactic GCs to assess systematic differences that might exist between their abundance variations. We calculated their red giant branch width, subtracted the effect of metallicity, and compared it with the available data on Galactic GCs by plotting them against initial and current cluster mass. We see that the two clusters follow the same general trend as that of the Galactic GCs, and Galactic GCs from different progenitors follow the same general trend as one another, indicating that the galaxy environment may only play a minor role in the formation of multiple stellar populations within GCs.
Author details: | Viswajith VanarajORCiD, Florian NiederhoferORCiDGND, Paul GoudfrooijORCiD |
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DOI: | https://doi.org/10.1093/mnras/stab2094 |
ISSN: | 0035-8711 |
ISSN: | 1365-2966 |
Title of parent work (English): | Monthly notices of the Royal Astronomical Society |
Subtitle (English): | analysis of NGC 1786 and NGC 1898 |
Publisher: | Oxford University Press |
Place of publishing: | Oxford |
Publication type: | Article |
Language: | English |
Date of first publication: | 2021/10/21 |
Publication year: | 2021 |
Release date: | 2024/01/02 |
Tag: | Hertzsprung-Russell and colour-magnitude diagrams; NGC 1786; NGC 1898; galaxies: individual: LMC; galaxies: star clusters: individual; globular clusters: general |
Volume: | 507 |
Issue: | 1 |
Number of pages: | 18 |
First page: | 282 |
Last Page: | 299 |
Funding institution: | European Research Council (ERC) under the European Horizon 2020 research and innovation programmeEuropean Research Council (ERC) [682115]; NASANational Aeronautics & Space Administration (NASA) [NAS 5-26555] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften |
Peer review: | Referiert |
Publishing method: | Open Access / Hybrid Open-Access |