9.4.2 Evolution of galaxies

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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Nucleosynthesis and Chemical Evolution of Galaxies

10.1017/cbo9780511812170 ◽

2009 ◽

Cited By ~ 75

Author(s):

Bernard E. J. Pagel

Keyword(s):

Chemical Evolution ◽

Evolution Of Galaxies

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Tidal Dwarf Galaxies

Highlights of Astronomy ◽

10.1017/s153929960002027x ◽

1998 ◽

Vol 11 (1) ◽

pp. 141-144

Author(s):

P.-A. Duc ◽

I.F. Mirabel ◽

E. Brinks

Keyword(s):

Environmental Effects ◽

Intergalactic Medium ◽

Dwarf Galaxies ◽

Star Forming ◽

Evolution Of Galaxies ◽

New Generation

The life and evolution of galaxies are dramatically affected by environmental effects. Interactions with the intergalactic medium and collisions with companions cause major perturbations in the morphology and contents of galaxies: in particular stars and gas clouds may be gravitationally pulled out from their parent galaxies during tidal encounters, forming rings, tails and bridges. This debris of collisions lies at the origin of a new generation of small galaxies, the so-called “tidal dwarf galaxies” (hereafter TDGs). Such an exotic way of forming galaxies was put forward by Schweizer (1978) and by Mirabel et al. (1992), who clearly observed the genesis of a star-forming object, out of material tidally expelled from the interacting system NGC 4038/39 (“The Antennae”). Recent studies, based on optical and HI observations, have shown that TDGs actually form a class of “recycled” objects with some properties similar to the more classical dwarf irregulars (dIrr) and blue compact dwarf galaxies (BCDs).

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Morphological evolution of galaxies

10.1063/1.53808 ◽

1997 ◽

Cited By ~ 2

Author(s):

Jonathan P. Gardner ◽

Sara R. Heap ◽

Eliot M. Malumuth ◽

Robert S. Hill ◽

Eric P. Smith

Keyword(s):

Morphological Evolution ◽

Evolution Of Galaxies

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A Reference Sample: ISM of the Most Isolated Galaxies

Symposium - International Astronomical Union ◽

10.1017/s0074180900197578 ◽

2004 ◽

Vol 217 ◽

pp. 220-221

Author(s):

L. Verdes-Montenegro ◽

J. Sulentic ◽

D. Espada ◽

S. Leon ◽

U. Lisenfeld ◽

...

Keyword(s):

Star Formation ◽

Interstellar Medium ◽

Galaxy Evolution ◽

Reference Sample ◽

Control Sample ◽

Evolution Of Galaxies ◽

Isolated Galaxies ◽

Internal Evolution

We are constructing the first complete unbiased control sample of the most isolated galaxies of the northern sky to serve as a template in the study of star formation and galaxy evolution in denser environments. Our goal is to compare and quantify the properties of different phases of the interstellar medium in this sample, as well as the level of star formation, both relevant parameters in the internal evolution of galaxies and strongly conditioned by the environment. To achieve this goal we are building a multiwavelength database for this sample to compare and quantify the properties of different phases of the ISM.

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The Role of Radio Loud Phase of Nuclear Activity in Galaxy Formation and Evolution

Proceedings of the International Astronomical Union ◽

10.1017/s1743921314004487 ◽

2013 ◽

Vol 9 (S304) ◽

pp. 419-420

Author(s):

Gabriel A. Ohanian

Keyword(s):

Galaxy Formation ◽

Subsequent Development ◽

Nuclear Activity ◽

Evolution Of Galaxies ◽

Galaxy Formation And Evolution ◽

Formation And Evolution ◽

Key Questions

AbstractKey questions, which arise when one tries to clear up a problem of formation and evolution of galaxies, is the question of energy: what is the energetic budget of AGN owing to form galaxies and provide its subsequent development? Hence, for understanding the formation and evolution of galaxies, it is important to estimate the energetic budget of AGN which we try to do involving radio loud phase of nuclear activity.

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