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SIEGE III: The formation of dense stellar clusters in sub-parsec resolution cosmological simulations with individual star feedback
F. Calura, R. Pascale, O. Agertz +10
Star clusters stand at the crossroads between galaxies and single stars. Resolving the formation of star clusters in cosmological simulations represents an ambitious and challengin…
Energy equipartition in multiple-population globular clusters
A. R. Livernois, F. I. Aros, E. Vesperini +7
We present the results of Monte Carlo simulations aimed at exploring the evolution towards energy equipartition of first- (1G) and second-generation (2G) stars in multiple-populati…
JWST imaging of the closest globular clusters -- IV. Chemistry, luminosity, and mass functions of the lowest-mass members in the NIRISS parallel fields
M. Libralato, R. Gerasimov, L. Bedin +9
We present observations of the two closest globular clusters, NGC 6121 and NGC 6397, taken with the NIRISS detector of JWST. The combination of our new JWST data with archival Hubb…
The HST Large Programme on Omega Centauri -- VII. The white dwarf cooling sequence
M. Scalco, M. Salaris, L. Bedin +9
We present a study of the white dwarf (WD) cooling sequence (CS) in the globular cluster (GC) Omega Centauri, the primary goal of a dedicated Hubble Space Telescope (HST) programme…
A 3D view of multiple populations kinematics in Galactic globular clusters
E. Dalessandro, M. Cadelano, A. Della Croce +8
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 stu…
Inference of black-hole mass fraction in Galactic globular clusters. A multi-dimensional approach to break the initial-condition degeneracies
A. Della Croce, F. I. Aros, E. Vesperini +4
Context. Globular clusters (GCs) are suggested to host many stellar-mass black holes (BHs) at their centers, thus resulting in ideal testbeds for BH formation and retention theorie…
MOCCA: Global properties of tidally filling and underfilling globular star clusters with multiple stellar populations
Arkadiusz Hypki, Enrico Vesperini, Mirek Giersz +5
We explore the evolution of various properties of multiple-population globular clusters (GCs) for a broad range of initial conditions. We simulated over 200 GC models using the MOC…
The HST Large Programme on omega Centauri -- VI. The radial gradient of the stellar populations
Michele Scalco, Luigi Bedin, Enrico Vesperini
In this paper we present the analysis of Hubble Space Telescope (HST) observations of the globular cluster Omega Centauri. Our analysis combines data obtained in this work with pre…
Dynamics of star clusters with tangentially anisotropic velocity distribution
Václav Pavlík, Douglas C. Heggie, Anna Lisa Varri +1
Recent high-precision observations with HST and Gaia enabled new investigations of the internal kinematics of star clusters (SCs) and the dependence of kinematic properties on the…
The ESO-VLT MIKiS survey reloaded: the internal kinematics of the core of M75
Silvia Leanza, Cristina Pallanca, Francesco R. Ferraro +7
We present the results of a study aimed at characterizing the kinematics of the inner regions of the halo globular cluster M75 (NGC 6864) based on data acquired as part of the ESO-…
The dynamical age of the LMC globular cluster NGC 1835 using the "dynamical clock"
Camilla Giusti, Mario Cadelano, Francesco R. Ferraro +5
In the context of the study of the size-age relationship observed in star clusters in the Large Magellanic Cloud and the investigation of its origin, here we present the determinat…
JWST Imaging of the Closest Globular Clusters -- III. Multiple Populations along the low-mass Main Sequence stars of NGC 6397
M. Scalco, M. Libralato, R. Gerasimov +9
Thanks to its exceptional near-infrared photometry, JWST can effectively contribute to the discovery, characterization, and understanding of multiple stellar populations in globula…
New Parameters for Star Cluster Dynamics: the role of clusters initial conditions
Bhavana Bhat, Barbara Lanzoni, Enrico Vesperini +4
We recently introduced three new parameters that describe the shape of the normalized cumulative radial distribution (nCRD) of the innermost stars in globular clusters and trace th…
The Large Programme on NGC6752 -- V. Differences in Luminosity and Mass Functions among Multiple Stellar Populations
M. Scalco, R. Gerasimov, L. R. Bedin +8
We exploit the astro-photometric dataset of the multi-epoch infrared parallel field of a Large Programme aimed at studying the faintest stars of t…
Discovery of an extended Horizontal Branch in the Large Magellanic Cloud globular cluster NGC1835
Camilla Giusti, Mario Cadelano, Francesco R. Ferraro +6
We present a high angular resolution multi-wavelength study of the massive globular cluster NGC 1835 in the Large Magellanic Cloud. Thanks to a combination of optical and near ultr…
The structural properties of multiple populations in globular clusters: the instructive case of NGC 3201
Mario Cadelano, Emanuele Dalessandro, Enrico Vesperini
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).…