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We study the relationship between the field star formation and cluster formation properties in a large sample of nearby dwarf galaxies. We use optical data from the Hubble Space Telescope and from ground-based telescopes to derive the ages…

We have made a new compilation of observations of maximum stellar mass versus cluster membership number from the literature, which we analyse for consistency with the predictions of a simple random drawing hypothesis for stellar mass…

Astrophysics · Physics 2009-11-13 Th. Maschberger , C. J. Clarke

We analyze the relationship between maximum cluster mass, M_max, and surface densities of total gas (Sigma_gas), molecular gas (Sigma_H2) and star formation rate (Sigma_SFR) in the flocculent galaxy M33, using published gas data and a…

Astrophysics of Galaxies · Physics 2015-06-11 Rosa A. Gonzalez-Lopezlira , Jan Pflamm-Altenburg , Pavel Kroupa

How stellar clusters disrupt, and over what timescales, is intimately linked with how they form. Here, we review the theory and observations of cluster disruption, both the suggested initial rapid dissolution phase (infant mortality) and…

Cosmology and Nongalactic Astrophysics · Physics 2011-07-13 Nate Bastian

We present a study of the M83 cluster population, covering the disc of the galaxy between radii of 0.45 and 4.5 kpc. We aim to probe the properties of the cluster population as a function of distance from the galactic centre. We observe a…

Astrophysics of Galaxies · Physics 2015-07-15 Angela Adamo , Diederik Kruijssen , Nate Bastian , Esteban Silva-Villa , Jenna Ryon

We analyze the relationship between maximum cluster mass, and surface densities of total gas (Sigma_gas), molecular gas (Sigma_H_2), neutral gas (Sigma_HI) and star formation rate (Sigma_SFR) in the grand design galaxy M51, using published…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Rosa A. Gonzalez-Lopezlira , Jan Pflamm-Altenburg , Pavel Kroupa

Star formation is a fundamental process for galactic evolution. One issue over the last several decades has been determining whether star formation is induced by external triggers or is self-regulated in a closed system. The role of an…

Astrophysics of Galaxies · Physics 2020-12-16 Yasuo Fukui , Asao Habe , Tsuyoshi Inoue , Rei Enokiya , Kengo Tachihara

We highlight how the mass-radius relation of cluster-forming cores combined with an external tidal field can influence infant weight-loss and disruption likelihood of clusters after gas expulsion. Specifically, we study how the relation…

Astrophysics of Galaxies · Physics 2015-05-20 Genevieve Parmentier , Pavel Kroupa

The properties of old globular cluster systems (GCSs) in galaxy halos offer unique insight into the physical processes that conspire to form any generic star cluster, at any epoch. Presented here is a summary of the information obtained…

Astrophysics · Physics 2007-05-23 Dean E. McLaughlin

The distribution of core radii of rich clusters in the Large Magellanic Cloud (LMC) systematically increases in both upper limit and spread with increasing cluster age. Cluster-to-cluster variations in the stellar initial mass function…

In many different galactic environments the cluster initial mass function (CIMF) is well described by a power-law with index -2. This implies a linear relation between the mass of the most massive cluster (M_max) and the number of clusters.…

Astrophysics · Physics 2009-12-04 M. Gieles

Many embedded star clusters do not evolve into long-lived bound clusters. The most popular explanation for this "infant mortality" of young clusters is the expulsion of natal gas by stellar winds and supernovae, which leaves up to 90% of…

Astrophysics · Physics 2009-11-13 Mark Gieles , Nate Bastian

We present a new technique to quantify cluster-to-cluster variations in the observed present-day stellar mass functions of a large sample of star clusters. Our method quantifies these differences as a function of both the stellar mass and…

Solar and Stellar Astrophysics · Physics 2012-07-26 Nathan Leigh , Stefan Umbreit , Alison Sills , Christian Knigge , Guido de Marchi , Evert Glebbeek , Ata Sarajedini

The majority of clusters in the Universe have masses well below 10^5 Msun. Hence their integrated fluxes and colors can be affected by the random presence of a few bright stars introduced by stochastic sampling of the stellar mass function.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Morgan Fouesneau , Ariane Lançon , Rupali Chandar , Bradley C. Whitmore

The implementation of star formation and stellar feedback in cosmological simulations plays a critical role in shaping galaxy properties. In the first paper of the series, we presented a new method to model star formation as a collection of…

Astrophysics of Galaxies · Physics 2018-07-25 Hui Li , Oleg Y. Gnedin , Nickolay Y. Gnedin

Star clusters are studied widely both as benchmarks for stellar evolution models and in their own right. Cluster age and mass distributions within galaxies are probes of star formation histories, and of cluster formation and disruption…

Solar and Stellar Astrophysics · Physics 2015-05-18 Morgan Fouesneau , Ariane Lançon

We demonstrate that the mass of the most massive star in a cluster correlates non-trivially with the cluster mass. A simple algorithm according to which a cluster is filled up with stars that are chosen randomly from the standard IMF but…

Astrophysics · Physics 2009-11-13 Carsten Weidner , Pavel Kroupa

The properties of young star clusters formed within a galaxy are thought to vary in different interstellar medium (ISM) conditions, but the details of this mapping from galactic to cluster scales are poorly understood due to the large…

The autocorrelation function provides an objective test for the existence of special scales in the hierarchical clustering of young stars. We apply this measure to single-star photometry for the brightest main sequence stars in the Small…

Astrophysics · Physics 2008-04-30 Mary Crone Odekon

The fundamental properties of stellar clusters, such as the age or the total initial mass in stars, are often inferred from population synthesis models. The predicted properties are then used to constrain the physical mechanisms involved in…

Astrophysics · Physics 2013-07-02 M. Cervino , D. Valls-Gabaud