Results 311 to 320 of about 148,505 (346)
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Early Formation and Evolution of Galaxies
Astrophysics and Space Science, 2003I review success and failure of the hierarchical galaxy formation model. In this scenario, the morphology of galaxies is regulated by the mode of gas accretion and intimately linked to discrete accretion events. Some of the common misconceptions about hierarchical clustering are discussed.
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THE FORMATION AND EVOLUTION OF GALAXIES
The New Cosmology, 2005The past decade has witnessed the establishment of a “standard paradigm” for structure formation in the Universe. It is now universally accepted that the dominant matter component of the Universe is in some form of non-baryonic, weaklyinteracting dark matter. Structure in the dark matter originated from inhomogeneities that were generated shortly after
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Galaxy Formation and Evolution
2010The rapidly expanding field of galaxy formation lies at the interface between astronomy, particle physics, and cosmology. Covering diverse topics from these disciplines, all of which are needed to understand how galaxies form and evolve, this book is ideal for researchers entering the field.
Houjun Mo +2 more
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Chemical evolution in simulations of galaxy formation
Astrophysics and Space Science, 2002We developed a new algorithm to implement detailed chemical evolution in SPH models of galaxy formation. Delayed gas restitution and different production timescales for different elements are taken into account, with minor computational effort. The algorithm is especially conceived for SPH simulations with large numbers of particles, and for parallel ...
Portinari,L, CARRARO, GIOVANNI, Lia,C
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The Evolution of the Star Formation Rate in Galaxies
Astrophysics and Space Science, 2001The aim of this work is to provide clues for the understanding of the star formation history of the universe. We study the process of star formation in galactic objects in hierarchical clustering scenarios using hydrodynamical cosmological simulations of standard Cold Dark Matter Universe. We estimate the specific star formation rate (sSFR) of galactic
SofÍa Alejandra Cora +4 more
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Galaxy formation and evolution
Physica Scripta, 1991The presence of high z quasars and radio galaxies tells us that galaxy formation began at z greater than 5, but leaves unanswered the question of when the bulk of galaxies formed. Recent near infrared number counts of galaxies strongly favor a cosmological geometry with q(sub 0) = 0.5 and lambda = 0.
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Galaxy Formation and Evolution
2009Major steps in our knowledge of high redshift galaxies and quasars were made possible by the synergy between the Hubble Space Telescope (HST) and 8–10 m class optical-near infrared ground-based telescopes. The galaxy samples were built from very deep, pencil-beam surveys with the HST and deep, wider area surveys undertaken with ground-based facilities.
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Formation and evolution of elliptical galaxies
Monthly Notices of the Royal Astronomical Society, 2002We address the problem of the formation and evolution of elliptical galaxies (from dwarf to normal/giant systems). In particular, by means of N-body-tree–SPH simulations, incorporating cooling, star formation, energy feedback and chemical evolution, we intend to explore whether the formation of elliptical galaxies from the monolithic collapse of ...
CHIOSI, CESARE, CARRARO, GIOVANNI
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The Formation & Evolution of Galaxies
Daedalus, 2014Weighing in at 1042 kilograms and measuring 1021 meters across, galaxies are perhaps the most awe-inspiring objects known to mankind. They are also the only places in an otherwise dark and unforgiving universe where stars and planets are able to form. In the past five to ten years we have made enormous progress in understanding when galaxies came into
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