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Some studies show that there are recent star formations in galaxies including early type galaxies. This suggests that we possibly did not obtain the accurate ages and metallicities of the dominating stellar populations of galaxies from…

Astrophysics · Physics 2007-08-30 Zhongmu Li , Zhanwen Han

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

A brief review on globular cluster sub-populations in galaxies, and their constraints on galaxy formation and evolution is given. The metal-poor and metal-rich sub-populations are put in a historical context, and their properties, as known…

Astrophysics · Physics 2007-05-23 Markus Kissler-Patig

Typical globular clusters (GCs - young and old) host stellar populations with little or no star-to-star variations in heavy elements (e.g., Ca, Fe) nor in age. Nuclear star clusters (NSCs), on the other hand, host complex stellar…

Astrophysics of Galaxies · Physics 2021-11-03 Nate Bastian , Joel Pfeffer

Globular cluster ages are more than just lower limits to the age of the universe; the distribution of ages constraints the timescales for galaxy formation and chemical evolution. Globular cluster populations with different metallicities…

Astrophysics · Physics 2007-05-23 Pauline Barmby

Analyzing global starburst properties in various kinds of starburst and post-starburst galaxies and relating them to the properties of the star cluster populations they form, I explore the conditions for the formation of massive, compact,…

Astrophysics · Physics 2009-12-04 Uta Fritze

The galactic population of globular clusters are old, dense star systems, with a typical cluster containing $10^4 - 10^6$ stars. As an old population of stars, globular clusters contain many collapsed and degenerate objects. As a dense…

Astrophysics · Physics 2016-10-19 Matthew Benacquista

Massive stars are key players in the evolution of galaxies, yet their formation pathway remains unclear. In this work, we use data from several galaxy-wide surveys to build an unbiased dataset of ~700 massive young stellar objects (MYSOs),…

Astrophysics of Galaxies · Physics 2016-11-23 B. B. Ochsendorf , M. Meixner , J. Chastenet , A. G. G. M. Tielens , J. Roman-Duval

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

The present-day globular cluster populations of galaxies reflect the cumulative effects of billions of years of galaxy evolution via such processes as mergers, tidal stripping, accretion, and in some cases the partial or even complete…

Astrophysics · Physics 2007-05-23 Michael J. West

I assess the similarities and differences between the star-formation modes in quiescent spiral galaxies versus those in violent starburst regions. As opposed to the quiescent star-formation mode in spiral galaxies, current empirical…

Astrophysics · Physics 2007-05-23 Richard de Grijs

We characterize the kinematics, morphology, stellar populations and star formation histories of a sample of massive compact galaxies in the nearby Universe, which might provide a closer look to the nature of their high redshift (z > 1.0)…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Anna Ferré-Mateu , Alexandre Vazdekis , Ignacio Trujillo , Patricia Sánchez-Blázquez , Elena Ricciardelli , Ignacio G. de la Rosa

Most stars do not form in isolation but as part of a cluster comprising anywhere between a few dozen to several million stars with stellar densities ranging from 0.01 to several 10$^5$ \Msun pc$^{-3}$. The majority of these clusters…

Astrophysics of Galaxies · Physics 2015-05-13 S. Pfalzner

The formation details of globular clusters (GCs) are still poorly understood due to their old ages and the lack of detailed observations of their formation. A large variety of models for the formation and evolution of GCs have been created…

Astrophysics of Galaxies · Physics 2025-04-24 Lucas M. Valenzuela , Duncan A. Forbes , Rhea-Silvia Remus

I present recent observations and analyses of star cluster formation in a wide variety of environments -- from young star clusters and super star clusters in normal actively star-forming spirals and irregulars to starbursting dwarfs and…

Astrophysics · Physics 2007-05-23 Uta Fritze - v. Alvensleben

(abridged) The old Star Cluster (SC) systems surrounding any sofar investigated galaxy represent a powerful tool for the understanding of the cosmological evolution of their host galaxies. Phases of enhanced cluster formation can be…

Astrophysics · Physics 2007-05-23 P. Anders , R. de Grijs , U. Fritze-v. Alvensleben

New and archival HST images of the globular cluster systems of 17 relatively nearby galaxies and 6 more distant galaxies have been used to establish the characteristics of GC subpopulations over a range of host galaxy morphological type…

Astrophysics · Physics 2007-05-23 Jean P. Brodie

We examine the properties of embedded clusters within 1 kiloparsec using new data from the Spitzer Space Telescope, as well as recent results from 2MASS and other ground-based near-infrared surveys. We use surveys of entire molecular clouds…

Nine presently known "young" Galactic globular clusters, which have ages / 3 Gyr smaller than the oldest clusters of similar metallicity, all have RGC > 15 kpc. Furthermore these young globulars are found to have below-average luminosities.…

Astrophysics · Physics 2009-10-30 Sidney van den Bergh

The Magellanic Clouds host a large population of massive (> 10^4 Msun) star clusters with ages ranging from a few Myr to 12 Gyr. In nearly all cases, close inspection of their CMDs reveals features that deviate from expectations of a…

Astrophysics of Galaxies · Physics 2017-11-06 I. Cabrera-Ziri , S. Martocchia , K. Hollyhead , N. Bastian