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We have carried out a set of Monte Carlo simulations to study a number of fundamental aspects of the dynamical evolution of multiple stellar populations in globular clusters with different initial masses, fractions of second generation (2G)…

Astrophysics of Galaxies · Physics 2021-03-03 E. Vesperini , J. Hong , M. Giersz , A. Hypki

We studied the spatial distributions of multiple stellar populations (MPs) in a sample of 20 globular clusters (GCs) spanning a broad range of dynamical ages. The differences between first-population (FP) and second-population (SP) stars…

Solar and Stellar Astrophysics · Physics 2019-10-16 E. Dalessandro , M. Cadelano , E. Vesperini , S. Martocchia , F. R. Ferraro , B. Lanzoni , N. Bastian , J. Hong , N. Sanna

We present the first 3D kinematic analysis of multiple stellar populations (MPs) in a representative sample of 16 Galactic globular clusters (GCs). For each GC in the sample we studied the MP line-of-sight, plane-of-the-sky and 3D rotation…

We present a detailed analysis of the internal dynamics of multiple stellar populations (MPs) in 28 Galactic Globular Clusters (GCs) across a wide field of view, extending from the innermost regions to the clusters' outskirts. Using…

We present the results of a suite of \Nbody simulations aimed at understanding the fundamental aspects of the long-term evolution of the internal kinematics of multiple stellar populations in globular clusters. Our models enable us to study…

Astrophysics of Galaxies · Physics 2019-07-24 Maria Tiongco , Enrico Vesperini , Anna Lisa Varri

We discuss constraints on the formation of multiple populations in globular clusters (GCs) imposed by their present-day kinematics (velocity dispersion and anisotropy) and spatial distribution. We argue that the observational evidence…

Astrophysics of Galaxies · Physics 2015-12-08 Vincent Hénault-Brunet

Globular clusters (GCs) host multiple stellar populations differing in their chemical and dynamical properties. A number of models for the formation of multiple populations predict that the subsystem of second generation (SG) stars is…

Astrophysics of Galaxies · Physics 2026-01-21 Ethan B. White , Enrico Vesperini , Emanuele Dalessandro , Anna Lisa Varri

The internal dynamics of multiple stellar populations in Globular Clusters (GCs) provides unique constraints on the physical processes responsible for their formation. Specifically, the present-day kinematics of cluster stars, such as…

Solar and Stellar Astrophysics · Physics 2020-02-05 G. Cordoni , A. P. Milone , A. Mastrobuono-Battisti , A. F. Marino , E. P. Lagioia , M. Tailo , H. Baumgardt , M. Hilker

We present the results of a study aimed at investigating the effects of dynamical evolution on the spatial distribution and mixing of primordial binary stars in multiple-population globular clusters. Multiple stellar population formation…

Astrophysics of Galaxies · Physics 2018-12-05 Jongsuk Hong , Saahil Patel , Enrico Vesperini , Jeremy J. Webb , Emanuele Dalessandro

Many galactic globular clusters (GCs) contain at least two stellar populations. Recent observational studies found that the radial distributions of the first (P1) and second population (P2) differ in dynamically-young GCs. Since P2 is…

We investigate the long-term dynamical evolution of two distinct stellar populations of low-mass stars in globular clusters in order to study whether the energy equipartition process can explain the high number of stars harbouring abundance…

Astrophysics · Physics 2009-11-13 T. Decressin , H. Baumgardt , P. Kroupa

The majority of Galactic globular star clusters (GCs) have been reported to contain at least two populations of stars (we use P1 for the primordial and P2 for the chemically-enriched population). Recent observational studies found that…

In this paper we study the long-term dynamical evolution of multiple-population clusters, focusing on the evolution of the spatial distributions of the first- (FG) and second-generation (SG) stars.In previous studies we have suggested that…

Astrophysics of Galaxies · Physics 2015-06-12 Enrico Vesperini , Stephen L. W. McMillan , Francesca D'Antona , Annibale D'Ercole

Globular clusters (GCs) are known to host multiple stellar populations showing chemical anomalies in the content of light elements. The origin of such anomalies observed in Galactic GCs is still debated. Here we analyse data compiled from…

Astrophysics of Galaxies · Physics 2021-05-26 Alessandra Mastrobuono-Battisti , Hagai B. Perets

Our understanding of the kinematic properties of multiple stellar populations (mPOPs) in Galactic globular clusters (GCs) is still limited compared to what we know about their chemical and photometric characteristics. Such limitation arises…

The formation process of multiple populations in globular clusters is still up for debate. Kinematic differences between the populations are particularly interesting in this respect, because they allow us to distinguish between single-epoch…

The spectroscopic and photometric classification of multiple stellar populations (MPs) in Galactic globular clusters (GCs) has enabled comparisons between contemporary observations and formation theories regarding the initial spatial…

Most globular clusters (GCs) show evidence for multiple stellar populations, suggesting the occurrence of several distinct star-formation episodes. The large fraction of second population (2P) stars observed requires a very large 2P gaseous…

High Energy Astrophysical Phenomena · Physics 2022-06-15 Mor Rozner , Hagai B. Perets

All multiple population (MP) formation models in globular clusters (GCs) predict that second population (SP) stars form more centrally concentrated than the first population (FP). As dynamical evolution proceeds, differences are…

Astrophysics of Galaxies · Physics 2024-02-23 Mario Cadelano , Emanuele Dalessandro , Enrico Vesperini

We present the results of a survey of N-body simulations aimed at studying the effects of the long-term dynamical evolution on the stellar mass function (MF) of multiple stellar populations in globular clusters. Our simulations show that if…

Astrophysics of Galaxies · Physics 2018-03-14 Enrico Vesperini , Jongsuk Hong , Jeremy J. Webb , Franca D'Antona , Annibale D'Ercole
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