Results 251 to 260 of about 142,796 (289)
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2000
Before stellar evolution theory reached its present stage, galactic evolution ideas were tentative and depended not so much on physical arguments (e.g. galactic dynamics) but intuitive notions based on observations of galaxy shapes. Historically this is quite understandable.
Bernard Abrams, Michael Stecker
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Before stellar evolution theory reached its present stage, galactic evolution ideas were tentative and depended not so much on physical arguments (e.g. galactic dynamics) but intuitive notions based on observations of galaxy shapes. Historically this is quite understandable.
Bernard Abrams, Michael Stecker
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2004
Few galaxies are loners: almost all are members of groups of at least a dozen systems. The Milky Way is no exception. It is the second brightest in a group of three dozen, mostly dwarf, galaxies. The brightest member of the Local Galaxy Group is the Andromeda Spiral M31. The most luminous members of the Local Group, including all those visible with any
Craig Crossen, Gerald Rhemann
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Few galaxies are loners: almost all are members of groups of at least a dozen systems. The Milky Way is no exception. It is the second brightest in a group of three dozen, mostly dwarf, galaxies. The brightest member of the Local Galaxy Group is the Andromeda Spiral M31. The most luminous members of the Local Group, including all those visible with any
Craig Crossen, Gerald Rhemann
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Dwarf Galaxies in Nearby Galaxy Groups
2011The nearby Universe is populated mostly by galaxy groups, whose dominant galaxies are surrounded by dwarf galaxies. We have observed nearby galaxy groups in a distance range of 13–34 Mpc with a variety of different morphologies, densities, and richness in order to investigate their dwarf galaxy populations and to detect tidal streams in the halos of ...
Johannes Ludwig +3 more
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Infrared Galaxies in Compact Groups
Astrophysics and Space Science, 2003IR properties of Compact Group (CG) galaxies are presented and compared with IR properties of isolated galaxies. Despite CGs displaying more E-SOs and optically bright galaxies, no differences are retrieved concerning FIR emission. The observed lack of strong FIR enhancement in the CG sample is not surprising when interpreting FIR sources in CGs as ...
B. Kelm, P. Focardi, A. Zampieri
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Dwarf Galaxies in Nearby Groups of Galaxies
EAS Publications Series, 2011We have confirmed 19 new dwarf members in five nearby (z ≤ 0.014) groups of galaxies, measured their photometric characteristics and compared the photometric scaling relations of the late-type dwarf galaxies in the field, group and cluster environments.
J. Vennik, U. Hopp
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Compact groups of compact galaxies. V
Astrophysics, 1976The lists of compact groups of compact galaxies are continued with a third list, which contains 54 new objects of this class discovered at Byurakan on the Palomar Sky Survey Charts. Searches were made in the +60, +66, +72/sup 0/ zones of the charts, which were completely surveyed except for regions near the galactic equator.
F. W. Baier, H. Tiersch
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Binary galaxies and groups of galaxies
1976NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Using precisely defined identification criteria, a sample of 156 binary galaxy systems is selected from the Zwicky Catalog of Galaxies and Clusters of Galaxies.
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Populations In Local Group Galaxies
Annual Review of Astronomy and Astrophysics, 1989developed primarily by W. Baade in the 1950s, was inspired by the apparent dichotomy of galaxy content. Some galaxies (spirals and irregulars) seemed to be made up largely of bright, blue stars, with an admixture of interstellar material, whereas others (ellipticals) seemed to be made up exclusively offaint red stars (13). Baade called the two kinds of
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2008
The results of recent statistical analyses of extensive samples of galaxy groups are reviewed. Most of the groups appear to be unrelaxed systems which are far from virial equilibrium. With the introduction of a corresponding correction factor to standard virial mass estimates, the latest catalogues of groups point to M/L B ≈ 400 M⊙/L⊙ (H0 = 100kms−1 ...
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The results of recent statistical analyses of extensive samples of galaxy groups are reviewed. Most of the groups appear to be unrelaxed systems which are far from virial equilibrium. With the introduction of a corresponding correction factor to standard virial mass estimates, the latest catalogues of groups point to M/L B ≈ 400 M⊙/L⊙ (H0 = 100kms−1 ...
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