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The evolution of our Universe is strongly influenced by the attractive force of gravity. A key aspect of this evolution, therefore, is the merging of galaxies. Here, we explore the role of mergers in shaping the properties of massive…

Astrophysics of Galaxies · Physics 2025-06-12 Sugata Kaviraj

The morphological classification of galaxies provides vital physical information about the orbital motions of stars in galaxies, and correlates in interesting ways with star formation history, and other physical properties. Galaxy…

Astrophysics of Galaxies · Physics 2025-02-14 Karen Masters

Recent results are reviewed on galaxy dynamics, bar evolution, destruction and re-formation, cold gas accretion, gas radial flows and AGN fueling, minor mergers. Some problems of galaxy evolution are discussed in particular, exchange of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Francoise Combes

We review the formation and evolution of fossil groups and clusters from both the theoretical and the observational points of view. In the optical band, these systems are dominated by the light of the central galaxy. They were interpreted…

Cosmology and Nongalactic Astrophysics · Physics 2021-06-28 J. Alfonso L. Aguerri , Stefano Zarattini

Secular evolution gradually shapes galaxies by internal processes, in contrast to early cosmological evolution which is more rapid. An important driver of secular evolution is the flow of gas from the disk into the central regions, often…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Johan H. Knapen

In this review I focus on a few selected topics, where recent theoretical and/or observational progress has been made and important developments are expected in the future. They include: 1) Evolution of isotopic ratios, 2) Mixing processes…

Astrophysics · Physics 2009-11-07 N. Prantzos

The evolution of the structural and kinematic properties of early-type galaxies (ETGs), their scaling relations, as well as their stellar metallicity and age contain precious information on the assembly history of these systems. We present…

In this paper we address the issue of the origin of some observational properties of the galactic globular cluster system. After a preliminary study of some general properties of the main evolutionary processes, we investigate the evolution…

Astrophysics · Physics 2015-06-24 E. Vesperini

Surveys of the local and distant Universe are the means to test and improve our models of galaxy formation. Substantial successes in the models are evident, while there is also considerable recent progress in identifying what remains to be…

Astrophysics · Physics 2007-05-23 Gerry Gilmore

Deep surveys conducted during the past decades have shown that galaxies in the distant universe are generally of more irregular shapes, and are disky in appearance and in their star formation rate, compared to galaxies in similar…

Astrophysics · Physics 2009-11-11 Xiaolei Zhang , Ronald J. Buta

The abundance gradients and the radial gas profile of the Galactic disc are analysed by means of a model for the chemical evolution of galaxies. As one of the major uncertainties in models for galaxy evolution is the star formation (SF)…

Astrophysics · Physics 2007-05-23 L. Portinari , C. Chiosi

Galaxies represent the visible fabric of the Universe and there has been considerable progress recently in both observational and theoretical studies. The underlying goal is to understand the present-day diversity of galaxy forms, masses…

Astrophysics · Physics 2007-05-23 Richard Ellis

I outline a quantitative method for characterizing galaxies both by photometric `form' and indices of spectral-type, applicable to both nearby and distant galaxies. Such a characterization provides insight on galaxy evolution because there…

Astrophysics · Physics 2009-10-31 Matthew A. Bershady

Chemical abundances provide important clues to the evolution of galaxies. Ionized nebulae are one of the main sources of chemical abundance measurements, especially in external galaxies. Studies of H II regions have shown that the overall…

Astrophysics · Physics 2007-05-23 G. A. Shields

Stellar evolution models are a cornerstone of young star astrophysics, which necessitates that they yield accurate and reliable predictions of stellar properties. Here, I review the current performance of stellar evolution models against…

Solar and Stellar Astrophysics · Physics 2016-02-03 Gregory A. Feiden

Giant molecular clouds (GMCs) and their stellar offspring are the building blocks of galaxies. The physical characteristics of GMCs and their evolution are tightly connected to galaxy evolution. The macroscopic properties of the…

An introduction is given to projects investigating galaxy evolution quantitatively by spectroscopic observations of very distant galaxies that have weak apparent brightnesses and small sizes as it is feasible with 10m-class telescopes like…

Astrophysics · Physics 2007-05-23 Bodo L. Ziegler

The investigation of the orientation of galaxies is a standard test concerning to scenarios of galaxy formation, because different theories of galaxy formation make various predictions regarding to the angular momentum of galaxies. The new…

Astrophysics of Galaxies · Physics 2014-04-02 Elena Panko , Paulina Piwowarska , Jolanta Godlowska , Wlodzimierz Godlowski , Piotr Flin

This talk investigates the formation of early-type galaxies from a deliberately observational view point. I begin by reviewing the conclusions that can be reached by comparing the detailed properties of galaxies in present-day clusters,…

Astrophysics · Physics 2007-05-23 Richard G. Bower , Ale Terlevich , Tadayuki Kodama , Nelson Caldwell

During this last decade our knowledge of the evolutionary properties of stars has significantly improved. This result has been achieved thanks to our improved understanding of the physical behavior of stellar matter in the thermal regimes…

Solar and Stellar Astrophysics · Physics 2015-05-14 Santi Cassisi