scholarly journals Globular cluster systems in nearby dwarf galaxies - II. Nuclear star clusters and their relation to massive Galactic globular clusters

2009 ◽  
Vol 396 (2) ◽  
pp. 1075-1085 ◽  
Author(s):  
Iskren Y. Georgiev ◽  
Michael Hilker ◽  
Thomas H. Puzia ◽  
Paul Goudfrooij ◽  
Holger Baumgardt
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
Dwarf Galaxies ◽  
Star Clusters ◽  
Cluster Systems ◽  
Galactic Globular Clusters

scholarly journals Globular Cluster Systems in the Hydra I Galaxy Cluster

2002 ◽  
Vol 207 ◽  
pp. 281-286
Author(s):  
Michael Hilker
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
Dwarf Galaxies ◽  
Star Clusters ◽  
Galaxy Cluster ◽  
Cluster Center ◽  
Early Type ◽  
Cluster Systems ◽  
First Results ◽  
Globular Cluster System

In this contribution, first results of deep VLT (V,I) photometry in the central region of the Hydra I galaxy cluster are presented. Many star clusters have been identified not only around several early-type galaxies, but also in the intra-cluster field, as far as 250 kpc from the cluster center. Outside the bulges of the central galaxies NGC 3311 and NGC 3309, the intra-cluster globular cluster system is dominated by blue clusters whose spatial distribution is similar to that of the (newly discovered) dwarf galaxies in Hydra I. The color distributions of globular clusters around NGC 3311 and NGC 3309 are multimodal, with a sharp blue peak and a slightly broader distribution of the red cluster population.

scholarly journals The Formation and Evolution of Star Clusters and Galaxies

2005 ◽  
Vol 13 ◽  
pp. 347-349
Author(s):  
Stephen E. Zepf
Keyword(s):  
Galaxy Formation ◽  
Globular Cluster ◽  
Globular Clusters ◽  
Near Infrared ◽  
Cluster Formation ◽  
Star Clusters ◽  
Elliptical Galaxies ◽  
Cluster Systems ◽  
Important Observation ◽  
Formation And Evolution

AbstractThis paper addresses the questions of what we have learned about how and when dense star clusters form, and what studies of star clusters have revealed about galaxy formation and evolution. One important observation is that globular clusters are observed to form in galaxy mergers and starbursts in the local universe, which both provides constraints on models of globular cluster formation, and suggests that similar physical conditions existed when most early-type galaxies and their globular clusters formed in the past. A second important observation is that globular cluster systems typically have bimodal color distributions. This was predicted by merger models, and indicates an episodic formation history for elliptical galaxies. A third and very recent result is the discovery of large populations of intermediate age globular clusters in several elliptical galaxies through the use of optical to near-infrared colors. These provide an important link between young cluster systems observed in starbursts and mergers and old cluster systems. This continuum of ages of the metal-rich globular cluster systems also indicates that there is no special age or epoch for the formation of the metal-rich globular clusters, which comprise about half of the cluster population. The paper concludes with a brief discussion of recent results on the globular cluster – low-mass X-ray binary connection.

scholarly journals The Formation of Globular Cluster Systems: how, when, and where?

1996 ◽  
Vol 171 ◽  
pp. 87-95
Author(s):  
William E. Harris
Keyword(s):  
Galaxy Formation ◽  
Globular Cluster ◽  
Globular Clusters ◽  
Cluster Formation ◽  
Star Clusters ◽  
Cluster Systems ◽  
The Right

Globular clusters, as fossil remnants of the protogalactic era, provide unique traces of the earliest events of galaxy formation. However, new observations – especially from HST – are showing that massive, globular-like star clusters belong not only to the pregalactic era but can form right up to the present day under the right circumstances. Appropriate interpretation may now let us learnsimultaneouslyabout the process of cluster formation as well as the nature of the gaseous fragments from which the galaxies were assembled.

scholarly journals The impact of galaxy harassment on the globular cluster systems of early-type cluster dwarf galaxies

2012 ◽  
Vol 429 (2) ◽  
pp. 1066-1079 ◽  
Author(s):  
R. Smith ◽  
R. Sánchez-Janssen ◽  
M. Fellhauer ◽  
T. H. Puzia ◽  
J. A. L. Aguerri ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Dwarf Galaxies ◽  
Early Type ◽  
Cluster Systems ◽  
The Impact

scholarly journals Dynamics of Globular Cluster Systems

1983 ◽  
Vol 100 ◽  
pp. 359-364
Author(s):  
K. C. Freeman
Keyword(s):  
Globular Cluster ◽  
Globular Clusters ◽  
Milky Way ◽  
Cluster Formation ◽  
Active Phase ◽  
Chemical Abundance ◽  
Cluster Systems ◽  
Chemical Enrichment ◽  
Wide Range ◽  
The Galaxy

In the Milky Way, the globular clusters are all very old, and we are accustomed to think of them as the oldest objects in the Galaxy. The clusters cover a wide range of chemical abundance, from near solar down to about [Fe/H] ⋍ −2.3. However there are field stars with abundances significantly lower than −2.3 (eg Bond, 1980); this implies that the clusters formed during the active phase of chemical enrichment, with cluster formation beginning at a time when the enrichment processes were already well under way.

scholarly journals THE ACCRETION OF DWARF GALAXIES AND THEIR GLOBULAR CLUSTER SYSTEMS

2010 ◽  
Vol 725 (1) ◽  
pp. 868-874 ◽  
Author(s):  
Craig E. Masters ◽  
Keith M. Ashman
Keyword(s):  
Globular Cluster ◽  
Dwarf Galaxies ◽  
Cluster Systems
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