Spectrophotometry in the integrated light of multiple populations in globular clusters
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arXiv
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| Autores principales: | , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866910859100422144 |
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| author | Branco, Vinicius Lançon, Ariane Coelho, Paula Costa, Guglielmo Dumont, Thibaut Martins, Lumara Prugniel, Philippe Martins, Fabrice Charbonnel, Corinne Palacios, Ana |
| author_facet | Branco, Vinicius Lançon, Ariane Coelho, Paula Costa, Guglielmo Dumont, Thibaut Martins, Lumara Prugniel, Philippe Martins, Fabrice Charbonnel, Corinne Palacios, Ana |
| contents | There is vast evidence from observations of multiple stellar populations (MPs) in globular clusters (GCs). To explore the issue theoretically, this work considers two subsolar metallicities, two ages, and two initial abundance patterns: a first population of standard $α$-enhanced metal mixture stars and a second stellar population displaying C-N and Na-O anticorrelations chemical abundance patterns, along with an enhanced helium fraction. Analysing the predictions for these extreme compositions, we provide insights into the observability of not-resolved MPs into individual stars of GCs. We use colours and spectrophotometric indices measurable with modern facilities (e.g. Euclid, LSST, DES, JWST). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_02919 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Spectrophotometry in the integrated light of multiple populations in globular clusters Branco, Vinicius Lançon, Ariane Coelho, Paula Costa, Guglielmo Dumont, Thibaut Martins, Lumara Prugniel, Philippe Martins, Fabrice Charbonnel, Corinne Palacios, Ana Astrophysics of Galaxies Solar and Stellar Astrophysics There is vast evidence from observations of multiple stellar populations (MPs) in globular clusters (GCs). To explore the issue theoretically, this work considers two subsolar metallicities, two ages, and two initial abundance patterns: a first population of standard $α$-enhanced metal mixture stars and a second stellar population displaying C-N and Na-O anticorrelations chemical abundance patterns, along with an enhanced helium fraction. Analysing the predictions for these extreme compositions, we provide insights into the observability of not-resolved MPs into individual stars of GCs. We use colours and spectrophotometric indices measurable with modern facilities (e.g. Euclid, LSST, DES, JWST). |
| title | Spectrophotometry in the integrated light of multiple populations in globular clusters |
| topic | Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2503.02919 |