Results 141 to 150 of about 1,335 (172)

Dwarf galaxies in Clusters

Astrophysics and Space Science, 2003
Dwarf and Low Surface Brightness (LSB) galaxies are the most numerous type of galaxies in the local Universe. However ubiquitous they are, their properties remain widely unexplored. Dwarf galaxies range from Ultra Compact Objects (UCO), Dwarf Ellipticals (dE), Dwarf Spheroidals (dSph) to Dwarf Irregulars (dIrr) and are generally of low surface ...
Infante Lira, Leopoldo, Mieske, Steffen, Hilker, M.   +2 more
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Galaxy evolution in clusters

Astrophysics and Space Science, 2003
The galaxy populations in present-day clusters are distinctly different from those of the field, indicating that environment plays a strong role in galaxy evolution. This review discusses some of the recent observations of moderate to high redshift clusters.
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Galaxy Distribution in Clusters of Galaxies

Symposium - International Astronomical Union, 1999
Galaxy distribution in clusters maybe affected by dynamical evolution of clusters and merging process of their member galaxies. In oreder to studey the effect, we study formation and evolution of galaxies in clusters by using N-body simulation. To identify galaxy size dark halos, we use the adaptive friends-of-friends algorithm (van Kampen 1995) at ...
T. Okamoto, S. Yachi, A. Habe
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Evolution of Galaxies in Clusters

2004
In dieser Doktorarbeit studiere ich die Entstehung und Entwicklung von Galaxien in Galaxienhaufen sowohl theoretisch als auch unter Einbeziehung von Beobachtungsdaten. Diese Doktorarbeit gliedert sich in zwei Teile: Einem theoretischen Teil schliesst sich eine Datenanalyse an. Im ersten Kapitel beschreibe ich warum Galaxienhaufen wichtig sind, erklaere
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On the distribution of galaxies and galaxy clusters

New Vistas in Astrophysics, 2000
The fact that galaxy and galaxy clusters distributions exhibit fractal properties is well established since twenty years 1 ,2. Nowadays, the controversy concerns the range of the fractal regime , the value of the fractal dimension and the eventual presence of a cross-over to homogeneity 3,4,5 In this paper we briefly review the methods of analysis ...
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The Motion of Galaxies in Galaxy Clusters

2012
Zwicky’s observation of the unexpectedly high velocities of the individual galaxies in the cluster of galaxies known as the ComaCluster led to the first appearance of the dark matter hypothesis. Unlike the organized motions in a nearly steady-state of the individual stars in a single spiral galaxy, the galaxies within a cluster are generally observed ...
Fred I Cooperstock, Steven Tieu
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Globular Clusters and Galaxy Formation in Clusters of Galaxies

1984
Taken at face value globular cluster counts indicate that: (1) Most elliptical galaxies in rich clusters were not formed by merging spirals and (2) central galaxies in rich clusters were already very special at the time when they were forming globular clusters.
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The Nature of Galaxies and Galaxy Clusters

2012
Galaxies are huge collections of stars and vast amounts of gas and dust and are found throughout the known universe. Galaxies outside our own are so far away that the stars blend together into an amorphous haze, and some of the dust (in larger concentrations) is visible in silhouette against the bright material (e.g., the dust lane of the Andromeda and
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Differences between the globular cluster systems of the Virgo and Fornax galaxy clusters

Monthly Notices of the Royal Astronomical Society, 2022
Joerg Dabringhausen, Michael Fellhauer, Steffen Mieske   +2 more
exaly  

Estimation of the Mass of the Very Massive Galaxy Cluster SRGe CL2305.2-2248 from Strong Lensing

Astronomy Letters, 2022
S Yu Sazonov, Dodonov S N, Sazonov S Yu
exaly