scholarly journals On the origin of the radial mass density profile of the Galactic halo globular cluster system

2005 ◽  
Vol 359 (2) ◽  
pp. 615-623 ◽  
Author(s):  
G. Parmentier ◽  
E. K. Grebel
Keyword(s):  
Density Profile ◽  
Globular Cluster ◽  
Galactic Halo ◽  
Mass Density ◽  
Cluster System ◽  
Globular Cluster System ◽  
Mass Density Profile

scholarly journals Metallicity Gradients in Globular Cluster Systems: the Trace of a Self-Enrichment Process?

2002 ◽  
Vol 207 ◽  
pp. 733-735
Author(s):  
G. Parmentier ◽  
P. Magain ◽  
A. Noels ◽  
A. Thoul ◽  
E. Jehin
Keyword(s):  
Globular Cluster ◽  
Common Property ◽  
First Generation ◽  
Galactic Halo ◽  
Cluster System ◽  
Type Ii ◽  
Cluster Systems ◽  
Globular Cluster System ◽  
Enrichment Process

We have developed a model of globular cluster self-enrichment, based on the ability of the globular cluster gaseous progenitors to retain the ejecta of a first generation of Type II Supernovae. The key point is that this ability depends on the pressure exerted on the progenitor cloud by the surrounding protogalactic medium and therefore on the location of the cloud in the protogalaxy. The model is able to explain the galactic halo metallicities and the metallicity gradient of the Old Halo which is thought to be the genuine galactic globular cluster system. The possibility that metallicity gradients are a common property of extragalactic globular cluster systems is also presented.

scholarly journals The Similarity of the Halo Field K Giant Population by the Globular Cluster System of our Galaxy

1988 ◽  
Vol 126 ◽  
pp. 519-520
Author(s):  
Kavan U. Ratnatunga
Keyword(s):  
Globular Cluster ◽  
Galactic Halo ◽  
Cluster System ◽  
Line Of Sight ◽  
Giant Stars ◽  
Abundance Estimates ◽  
Metal Abundance ◽  
Objective Prism ◽  
Globular Cluster System

Line-of-sight velocities and improved metal abundance estimates are available for a representative sample of 58 giants located by an objective prism survey (Ratnatunga and Freeman 1985), in a 20 square degree field near SA 127 (1 = 272, b = +39). These in-situ K-giants of the outer regions of our galactic halo give a direct comparison of the field population with the globular cluster system. Fig. 1 illustrates the distribution of line-of-sight velocity with abundance for the sample of giant stars in SA 127. The mean and dispersion of the sample appears to be discontinuous at [FeH] ~ −0.8. Fig. 2 shows the distribution of [Fe/H] with distance from the Sun for the same stars. The metal stronger giants (filled symbols) represent a population of stars up to 6 kpc above the plane of the disk and have a velocity dispersion of about 50 km/s. In contrast, the metal weaker giants have a typical halo dispersion of about 120 km/s.

The Globular Cluster System in the Inner Region of M87

1999 ◽  
Vol 513 (2) ◽  
pp. 733-751 ◽  
Author(s):  
Arunav Kundu ◽  
Bradley C. Whitmore ◽  
William B. Sparks ◽  
F. Duccio Macchetto ◽  
Stephen E. Zepf ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Cluster System ◽  
Globular Cluster System ◽  
Inner Region

scholarly journals Testing the gas mass density profile of galaxy clusters with distance duality relation

2016 ◽  
Vol 457 (1) ◽  
pp. 281-287 ◽  
Author(s):  
Shuo Cao ◽  
Marek Biesiada ◽  
Xiaogang Zheng ◽  
Zong-Hong Zhu
Keyword(s):  
Galaxy Clusters ◽  
Density Profile ◽  
Mass Density ◽  
Duality Relation ◽  
Mass Density Profile

The Distance to the M31 Globular Cluster System

1998 ◽  
Vol 115 (5) ◽  
pp. 1916-1920 ◽  
Author(s):  
Stephen Holland
Keyword(s):  
Globular Cluster ◽  
Cluster System ◽  
Globular Cluster System

scholarly journals The Globular Cluster System of the Galaxy NGC 6876

Galaxies ◽  
2017 ◽  
Vol 5 (3) ◽  
pp. 30 ◽  
Author(s):  
Ana Ennis ◽  
Lilia Bassino ◽  
Juan Caso
Keyword(s):  
Globular Cluster ◽  
Cluster System ◽  
The Galaxy ◽  
Globular Cluster System

scholarly journals Metallicity maps of the globular cluster system in the Galaxy

1993 ◽  
Vol 402 ◽  
pp. L53 ◽  
Author(s):  
Emilio J. Alfaro ◽  
Jesus Cabrera-Cano ◽  
Antonio J. Delgado
Keyword(s):  
Globular Cluster ◽  
Cluster System ◽  
The Galaxy ◽  
Globular Cluster System

scholarly journals The SLUGGS Survey: wide field imaging of the globular cluster system of NGC 4278

2013 ◽  
Vol 436 (2) ◽  
pp. 1172-1190 ◽  
Author(s):  
Christopher Usher ◽  
Duncan A. Forbes ◽  
Lee R. Spitler ◽  
Jean P. Brodie ◽  
Aaron J. Romanowsky ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Cluster System ◽  
Wide Field ◽  
Globular Cluster System ◽  
Field Imaging ◽  
Wide Field Imaging
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