Multiple Stellar Populations in Globular Clusters

@article{Bastian2018MultipleSP,
  title={Multiple Stellar Populations in Globular Clusters},
  author={Nate Bastian and Carmela Lardo},
  journal={Annual Review of Astronomy and Astrophysics},
  year={2018}
}
  • N. Bastian, C. Lardo
  • Published 4 December 2017
  • Physics
  • Annual Review of Astronomy and Astrophysics
Globular clusters (GCs) exhibit star-to-star variations in specific elements (e.g., He, C, N, O, Na, Al) that bear the hallmark of high-temperature H-burning. These abundance variations can be observed spectroscopically and also photometrically, with the appropriate choice of filters, due to the changing of spectral features within the band pass. This phenomenon is observed in nearly all of the ancient GCs, although, to date, it has not been found in any massive cluster younger than 2 Gyr. Many… 

Figures from this paper

Leveraging HST with MUSE – I. Sodium abundance variations within the 2-Gyr-old cluster NGC 1978
Nearly all of the well studied ancient globular clusters (GCs), in the Milky Way and in nearby galaxies, show star-to-star variations in specific elements (e.g., He, C, N, O, Na, Al), known as
Globular cluster chemistry in fast-rotating dwarf stars belonging to intermediate-age open clusters
The peculiar chemistry observed in multiple populations of Galactic globular clusters is not generally found in other systems such as dwarf galaxies and open clusters, and no model can currently
Potassium abundances in multiple stellar populations of the globular cluster NGC 4833
NGC 4833 is a metal-poor Galactic globular cluster (GC) whose multiple stellar populations present an extreme chemical composition. The Na-O anti-correlation is quite extended, which is in agreement
Explaining the Multiple Populations in Globular Clusters by Multiple Episodes of Star Formation and Enrichment without Gas Expulsion from Massive Star Feedback
In order to investigate the origin of multiple stellar populations found in globular clusters (GCs) in the halo and bulge of the Milky Way, we have constructed chemical evolution models for their
When Does the Onset of Multiple Stellar Populations in Star Clusters Occur? Detection of Enriched Stellar Populations in NGC 2121
Star-to-star light-element abundance variations, know as multiple stellar populations (MPs), are common in almost all Galactic globular clusters. Recently, MPs have also been detected in a number of
Linking globular cluster structural parameters and their evolution: multiple stellar populations
Globular clusters (GCs) are known to host multiple stellar populations showing chemical anomalies in the content of elements lighter than Si. The origin of such anomalies and of the internal
Detection of multiple stellar populations in extragalactic massive clusters with JWST
The discovery of multiple stellar populations (multiple in the sense of inhomogeneous chemical abundances, with specific patterns of variations of a few light elements) in Galactic globular clusters
Supermassive stars as the origin of the multiple populations in globular clusters
Abstract Globular clusters (GCs) display anomalous light-elements abundances (HeCNONaMgAl), resembling the yields of hot-hydrogen burning, but there is no consensus yet on the origin of these
Observing multiple populations in globular clusters with the ESO archive: NGC 6388 reloaded
The metal-rich and old bulge globular cluster (GC) NGC 6388 is one of the most massive Galactic GCs (M ~ 106 M⊙). However, the spectroscopic properties of its multiple stellar populations rested only
SNe and their impact during the early evolution of Type I Globular Clusters
The iron composition of globular clusters (GCs) is homogeneous in all but a few massive clusters, despite the presence of multiple stellar populations. Hence, most if not all the supernovae (SN)
...
1
2
3
4
5
...

References

The E-MOSAICS project: simulating the formation and co-evolution of galaxies and their star cluster populations
We introduce the MOdelling Star cluster population Assembly In Cosmological Simulations within EAGLE (E-MOSAICS) project. E-MOSAICS incorporates models describing the formation, evolution, and