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Stellar-mass black holes (BHs) can be retained in globular clusters (GCs) until the present. Simulations of GC evolution find that the relaxation driven mass-loss rate is elevated if BHs are present, especially near dissolution. We capture…

Astrophysics of Galaxies · Physics 2023-05-17 Mark Gieles , Oleg Y. Gnedin

In an effort to probe the globular cluster (GC) system of an isolated elliptical galaxy, a comprehensive analysis of the NGC 821 GC system was performed. New imaging from the WIYN Mini-Mosaic imager, supplemented with Hubbl e Space…

Astrophysics · Physics 2009-11-13 Lee R. Spitler , Duncan A. Forbes , Jay Strader , Jean P. Brodie , Jay S. Gallagher

The initial cluster mass function (ICMF) is a fundamental property of star formation in galaxies. To gauge its universality, we measure and compare the ICMFs in irregular and spiral galaxies. Our sample of irregular galaxies is based on 13…

Astrophysics · Physics 2009-09-29 Jayce D. Dowell , Brent A. Buckalew , Jonathan C. Tan

Clusters of galaxies usually contain rich populations of globular clusters (GCs). We investigate how different star formation histories (SFHs) shape the final mass distribution of star clusters. We assume that every star cluster population…

Astrophysics of Galaxies · Physics 2015-10-21 Christine Schulz , Jan Pflamm-Altenburg , Pavel Kroupa

We investigate how a single generation galactic mass function (SGMF) depends on the existence of variations in the initial stellar mass functions (IMF) of stellar clusters. We show that cluster-to-cluster variations of the IMF lead to a…

Astrophysics of Galaxies · Physics 2018-06-13 Sami Dib , Shantanu Basu

We present a simple physical model for the minimum mass of bound stellar clusters as a function of the galactic environment. The model evaluates which parts of a hierarchically-clustered star-forming region remain bound given the…

Astrophysics of Galaxies · Physics 2019-07-17 Sebastian Trujillo-Gomez , Marta Reina-Campos , J. M. Diederik Kruijssen

We study the evolution of the galactic globular cluster system to determine its initial mass-function and the fraction of halo stars that could have come from disrupted globular clusters. We study the cluster evolution under the influence…

Astrophysics · Physics 2007-05-23 H. Baumgardt

The evolution of the global stellar mass function (MF) of star clusters is studied based on a large set of N-body simulations of clusters with a range of initial masses, initial concentrations, in circular or elliptical orbits in different…

Astrophysics of Galaxies · Physics 2015-06-15 Henny J. G. L. M. Lamers , Holger Baumgardt , Mark Gieles

We discuss the origin of physical properties of globular cluster systems (GCSs) in galaxies in terms of galaxy formation and evolution processes. Based on numerical simulations of dynamical evolution of GCSs in galaxies, we particularly…

Astrophysics · Physics 2007-05-23 Kenji Bekki

We examine various implications from a dynamical and chemical model of globular clusters (GCs), which successfully reproduces the observed abundance patterns and the multiple populations of stars in these systems assuming chemical…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Daniel Schaerer , Corinne Charbonnel

We highlight the impact of cluster-mass-dependent evolutionary rates upon the evolution of the cluster mass function during violent relaxation, that is, while clusters dynamically respond to the expulsion of their residual star-forming gas.…

Astrophysics of Galaxies · Physics 2015-06-11 Genevieve Parmentier , Holger Baumgardt

Globular clusters (GC) are important objects for tracing the early evolution of a galaxy. We study the relation between the properties of globular cluster systems - as quantified by the GC specific frequency (SN) - and the properties of…

Astrophysics of Galaxies · Physics 2019-05-14 Ahmed H. Abdullah , Pavel Kroupa , Patrick Lieberz , Rosa Amelia Gonzalez-Lopezlira

The fraction of stellar mass contained in globular clusters (GCs), also measured by number as the specific frequency, is a fundamental quantity that reflects both a galaxy's early star formation and its entire merging history. We present…

We built Galactic open star cluster mass functions (CMFs) for different age sub-samples in the wider solar neighbourhood. We present a simple cluster formation and evolution model to reproduce the main features of the CMFs. We used an…

Astrophysics of Galaxies · Physics 2023-04-26 Andreas Just , Anatoly E. Piskunov , Jonathan H. Klos , Dana A. Kovaleva , Evgeny V. Polyachenko

Globular clusters (GCs) constitute a system which is evolving because of various interactions with the galactic environment. Evolution may be the explanation of many observed features of Globular Cluster Systems (GCSs); the different radial…

Astrophysics · Physics 2007-05-23 R. Capuzzo-Dolcetta

We investigated the evolution of clusters of galaxies using self-consistent N-body simulations. We varied the initial model of galaxies and clusters, and studied the dependence of evolution on initial conditions. We found that the growth…

Astrophysics · Physics 2016-08-30 T. Sensui , Y. Funato , J. Makino

To obtain an accurate description of broad-band photometric star cluster evolution, certain effects should be accounted for, such as the preferential loss of low-mass stars and the retain of stellar remnants. Moreover, the IMF and…

Astrophysics · Physics 2009-11-13 J. M. Diederik Kruijssen , Henny J. G. L. M. Lamers

The initial and present-day mass functions (ICMF and PDMF, respectively) of the Galactic globular clusters (GCs) are constructed based on their observed luminosities, the stellar evolution and dynamical mass-loss processes, and the…

Astrophysics of Galaxies · Physics 2015-06-04 Charles Bonatto , Eduardo Bica

In the first part of this article, we review observations of the mass and luminosity functions of young and old star cluster systems. We also review some of the physical processes that may determine the characteristic mass of globular…

Astrophysics · Physics 2007-05-23 S. Michael Fall , Qing Zhang

[abridged] We study the dependence of the galaxy size evolution on morphology, stellar mass and large scale environment for a sample of 298 group and 384 field quiescent early-type galaxies from the COSMOS survey, selected from z~1 to the…