Formation and early evolution of galaxies: Constraints on the properties of ?hot? protogalaxies

Astrophysics ◽  
1989 ◽  
Vol 30 (1) ◽  
pp. 26-33 ◽  
Author(s):  
V. G. Berman ◽  
A. A. Suchkov
Keyword(s):  
Early Evolution ◽  
Evolution Of Galaxies

scholarly journals Early Evolution of Galaxies: Preliminary Results

1977 ◽  
Vol 45 ◽  
pp. 115-118
Author(s):  
J. P. Chiezel ◽  
B. Lazareff ◽  
Laurent Vigroux
Keyword(s):  
Emission Line ◽  
Radial Flow ◽  
Galactic Center ◽  
Elliptical Galaxies ◽  
Progress Report ◽  
Early Evolution ◽  
Clusters Of Galaxies ◽  
X Ray ◽  
Evolution Of Galaxies ◽  
Preliminary Version

This paper is a progress report on studies of coupled dynamical and chemical evolution of galaxies. We have focused our attention on the occurence of galactic hot winds. Such hot winds have been studied by Mathews and Baker (1971) for elliptical galaxies. Recently the detection of an iron X-ray emission line in clusters of galaxies give some support to their existence (Vigroux, 1977). On an other hand, the large radial flow in the galactic center might be explained by such hot wind. We shall present here a preliminary version of our evolution model and the results obtained for the early evolution of a 1.2 × 1012Mʘgalaxy.

Spectroscopic and Photometric Nearby Field Galaxy Survey

1996 ◽  
Vol 171 ◽  
pp. 396-396
Author(s):  
R.A. Jansen ◽  
M. Franx ◽  
D.G. Fabricant ◽  
N. Caldwell
Keyword(s):  
Galaxy Evolution ◽  
Early Evolution ◽  
Evolution Of Galaxies ◽  
Field Galaxy ◽  
Key Questions

Galaxy evolution is one of the key questions in current astronomy. Observations of strong and recent galaxy evolution conflict with previous ideas of orderly and early evolution of galaxies.

scholarly journals A New Scenario for the Formation of Globular Clusters and Their Peculiarities

1980 ◽  
Vol 85 ◽  
pp. 417-420
Author(s):  
Alberto Di Fazio ◽  
Alvio Renzini
Keyword(s):  
Globular Clusters ◽  
Early Evolution ◽  
Heavy Elements ◽  
Observational Constraints ◽  
Satisfactory Explanation ◽  
Dwarf Spheroidal Galaxies ◽  
Evolution Of Galaxies ◽  
Apparent Correlation ◽  
The Galaxy ◽  
Parent Galaxy

Globular clusters in galaxies still challenge astronomers to find a satisfactory explanation for a number of their properties, namely: (i) their very formation; (ii) the origin of their heavy elements; (iii) the trend of their metallicity with distance from the centre of the parent galaxy; (iv) the apparent correlation of their average metallicity with the mass of the galaxy with which they are associated; and, (v) the need of a “second parameter” (age? helium? [CNO/Fe]?) to explain the variety of morphologies of their colour-magnitude diagrams. Dwarf spheroidal galaxies pose similar problems, to an even more puzzling degree. It is clear that an understanding of the above topics is practically the same as the understanding of the very early evolution of galaxies. Any model for the formation and early evolution of galaxies should necessarily be tested whether or not the predicted properties of the associated globular cluster family are in agreement with the observational constraints. Conversely, any attempt to account for the characteristics of globular clusters would be blind without the support of detailed protogalactic models.

Stellar Evolution

1962 ◽  
Vol 11 (02) ◽  
pp. 137-143
Author(s):  
M. Schwarzschild
Keyword(s):  
Solar System ◽  
Stellar Evolution ◽  
Space Craft ◽  
New Techniques ◽  
Substantial Body ◽  
Individual Stars ◽  
The Past ◽  
Evolution Of Galaxies ◽  
History Of ◽  
Fast Flow

It is perhaps one of the most important characteristics of the past decade in astronomy that the evolution of some major classes of astronomical objects has become accessible to detailed research. The theory of the evolution of individual stars has developed into a substantial body of quantitative investigations. The evolution of galaxies, particularly of our own, has clearly become a subject for serious research. Even the history of the solar system, this close-by intriguing puzzle, may soon make the transition from being a subject of speculation to being a subject of detailed study in view of the fast flow of new data obtained with new techniques, including space-craft.

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