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Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe
Pérez-González P +21 more
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A natural mechanism of eukaryotic horizontal gene transfer
Urquhart AS +3 more
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Chemical Evolution of Galaxies
Annual Review of Astronomy and Astrophysics, 1976The various nucleosynthetic processes needed to account for the formation of the different nuclear species have been described in the previous chapters as well as the location of these nucleosynthetic events. At the beginning of this monograph, the evolution of the matter which constitutes the celestial bodies such as planets, stars and galaxies was ...
Audouze, J., Tinsley, B.M.
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The Chemical Evolution of Galaxies
Progress in Particle and Nuclear Physics, 1986After a brief introduction into the evolution of spiral galaxies, the observational evidence for temporal and spatial abundance variations across the galactic disk is discussed. The theoretical framework of chemical evolution models is summarised, followed by a critical discussion of available constraints. Solutions applying to the special cases of the
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Chemical evolution of the galaxy
AIP Conference Proceedings, 1995The article presents data on and discussion of various issues related to element abundance trends in our Galaxy as a function of metallicity [Fe/H]: halo star abundances, evolution of the Galactic supernova rates, the age‐metallicity relationship for disk stars, and halo and disk star formation history and nycleosynthesis timescales. (AIP)
James W. Truran, Francis Timmes
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The chemical evolution of the Galaxy
Nature, 1986The distribution of enriched material in the stars and gas of our Galaxy contains information pertaining to the chemical evolution of the Milky Way from its formation epoch to the present, providing general constraints on theories of galaxy formation. Detailed studies of the metallicities of well-defined samples of long-lived G-dwarf stars in the solar
Rosemary F. G. Wyse +2 more
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Chemical Evolution of the Galaxy
Annual Review of Astronomy and Astrophysics, 1991Since the discovery of the cosmic microwave background ( 1 84), it is gen erally assumed that the universe originated from a hot big bang (78). Detailed nucleosynthesis calculations based on the hot big bang model (e.g. 4, 1 82, 221 ) showed that no element heavier than 9Be could have been synthesized primordially with an abundance exceeding 101 4 by ...
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Chemical evolution in simulations of galaxy formation [PDF]
Astrophysics and Space Science, 2002 We 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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Chemical and Dynamical Evolution of Spiral Galaxies
Astrophysics and Space Science, 2002We present the very first results of a new 3D numerical model for the formation and evolution of spiral galaxies along the Hubble sequence. We take into account the hydrodynamical properties of the gas with an SPH method while we use a tree code for the gravitational forces of the dark matter and stars.
Poirier, Sébastien +2 more
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The chemical evolution of galaxies
Journal of Physics G: Nuclear and Particle Physics, 1993The chemical evolution of galaxies is discussed starting with the simple box model. It is shown that this model with the additional assumption of metal-rich outflow provides a first useful insight into the chemical evolution of different stellar populations.
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