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A literature compilation of nuclear star cluster (NSC) masses is used to study the correlation between global and nuclear properties. A comparison of observational data to the predictions of semi-analytical galaxy formation models places…

Astrophysics of Galaxies · Physics 2015-06-11 Fabio Antonini , Enrico Barausse , Joseph Silk

The coexistence of nuclear star clusters (NSCs) and supermassive black holes (SMBHs) in galaxies with stellar masses $\sim 10^{10}~$M$_\odot$, the scaling relations between their properties and properties of the host galaxy (e.g.,…

Astrophysics of Galaxies · Physics 2024-12-30 M. Liempi , D. R. G. Schleicher , A. Benson , A. Escala , M. C. Vergara

The centers of stellar spheroids are often marked by the presence of nucleated central regions, called nuclear star clusters (NSCs). The origin of NSCs is still unclear. Here we investigate the possibility that NSCs originate from the…

Astrophysics of Galaxies · Physics 2015-06-05 Fabio Antonini

We review the current knowledge about nuclear star clusters (NSCs), the spectacularly dense and massive assemblies of stars found at the centers of most galaxies. Recent observational and theoretical work suggest that many NSC properties,…

Astrophysics of Galaxies · Physics 2020-07-15 Nadine Neumayer , Anil Seth , Torsten Boeker

Nuclear stellar cluster (NSCs) are known to exist around massive black holes (MBHs) in galactic nuclei. Two formation scenarios were suggested for their origin: (1) Build-up of NSCs from consecutive infall of stellar cluster and (2)…

Astrophysics of Galaxies · Physics 2015-06-22 Danor Aharon , Hagai B. Perets

Nuclear Star Clusters (NSCs) are dense stellar systems located at the centers of galaxies. Employing Enzo-Abyss, which integrates hydrodynamics with a direct N-body solver, we introduce a simulation capable of resolving the evolution of…

Astrophysics of Galaxies · Physics 2026-03-20 Yongseok Jo , Minyong Jung , Greg L. Bryan , Seoyoung Kim , Ji-hoon Kim , Ahram Lee

Nuclear stellar cluster (NSCs) are known to exist around massive black holes (MBHs) in galactic nuclei. Two formation scenarios were suggested for their origin: Build-up of NSCs and Continuous in-situ star-formation. Here we study the…

Astrophysics of Galaxies · Physics 2017-08-23 Danor Aharon , Hagai B. Perets

Galactic nuclei typically host either a Nuclear Star Cluster (NSC, prevalent in galaxies with masses $\lesssim 10^{10}M_\odot$) or a Massive Black Hole (MBH, common in galaxies with masses $\gtrsim 10^{12}M_\odot$). In the intermediate mass…

Astrophysics of Galaxies · Physics 2016-02-17 Iskren Y. Georgiev , Torsten Böker , Natan Leigh , Nora Lützgendorf , Nadine Neumayer

Observed low-mass galaxies with nuclear star clusters (NSCs) can host accreting massive black holes (MBH). We present simulations of dwarf galaxies ($M_{\mathrm{baryon}} \sim 0.6 - 2.4 \times 10^8 \rm \, M_\odot$) at solar mass resolution…

Nuclear star clusters (NSCs) surrounding supermassive black holes (SMBHs) are among the densest stellar environments in the universe. In these environments, collisions can shape the stellar mass function and produce exotic stellar…

Astrophysics of Galaxies · Physics 2025-12-15 Jaden S. Sidhu , Sanaea C. Rose , Frederic A. Rasio

Studies have suggested that there is a strong correlation between the masses of nuclear star clusters (NSCs) and their host galaxies, a correlation which said to be an extension of the well-known correlations between supermassive black…

Cosmology and Nongalactic Astrophysics · Physics 2012-12-21 Peter Erwin , Dimitri Gadotti

Nuclear stellar cluster (NSCs) are known to exist around massive black holes (MBHs) in galactic nuclei. They are thought to have formed through in-situ star formation following gas inflow to the nucleus of the galaxy and/or through the…

Astrophysics of Galaxies · Physics 2015-06-18 Hagai B. Perets , Alessandra Mastrobuono-Battisti

Abridged: In one widely discussed model for the formation of nuclear star clusters (NSCs), massive globular clusters spiral into the center of a galaxy and merge to form the nucleus. It is now known that at least some NSCs coexist with…

Astrophysics of Galaxies · Physics 2015-05-30 Fabio Antonini , Roberto Capuzzo-Dolcetta , Alessandra Mastrobuono-Battisti , David Merritt

Nuclear star clusters (NSCs) are massive star clusters found ubiquitously in the centres of galaxies, from the dwarf regime to massive ellipticals and spirals. The fraction of nucleated galaxies is as high as $>$ 90 % at $M_{\text{gal}}…

Astrophysics of Galaxies · Physics 2022-03-14 Katja Fahrion , Ryan Leaman , Mariya Lyubenova , Glenn van de Ven

We present parsec-scale kinematics of eleven nearby galactic nuclei, derived from adaptive-optics assisted integral-field spectroscopy at (near-infrared) CO band-head wavelengths. We focus our analysis on the balance between ordered…

Nuclear star clusters (NSCs) are massive star clusters found in all types of galaxies from dwarfs to massive galaxies. Recent studies show that while low-mass NSCs in dwarf galaxies ($M_\text{gal} < 10^{9} M_\odot$) form predominantly out…

Nuclear Star Clusters (NSCs) are often present in spiral galaxies as well as resolved Stellar Nuclei (SNi) in elliptical galaxies centres. Ever growing observational data indicate the existence of correlations between the properties of…

Astrophysics of Galaxies · Physics 2014-09-22 Manuel Arca-Sedda , Roberto Capuzzo-Dolcetta

Nuclear star clusters (NSCs) are dense stellar clusters observed in galactic nuclei, typically hosting a central massive black hole. Here we study the possible formation and evolution of NSCs through the inspiral of multiple star clusters…

Astrophysics of Galaxies · Physics 2015-06-19 Alessandra Mastrobuono-Battisti , Hagai B. Perets , Abraham Loeb

In many galactic nuclei, a nuclear stellar cluster (NSC) co-exists with a supermassive black hole (SMBH). In this work, we explore the idea that the NSC forms before the SMBH through the merger of several stellar clusters that may contain…

Astrophysics of Galaxies · Physics 2024-02-05 Abbas Askar , Melvyn B. Davies , Ross P. Church

Photometrically distinct nuclear star clusters (NSCs) are common in late-type-disk and spheroidal galaxies. The formation of NSCs is inevitable in the context of normal star formation in which a majority of stars form in clusters. A young,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Meghann Agarwal , Milos Milosavljevic
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