Results 291 to 300 of about 77,216 (325)

The hard steps model and whole Earth-system transitions. [PDF]

Philos Trans R Soc Lond B Biol Sci
Watson A.
europepmc   +1 more source

Galaxy Tomography with the Gravitational Wave Background from Supermassive Black Hole Binaries

Chen Y.
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V3101 Cyg: A Cataclysmic Variable Born with a Brown Dwarf Donor

Ramirez S, Gänsicke B, Sahu S, Belloni D, Pala A, Koester D, Toloza O, Lagos-Vilches F.   +7 more
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The Evolution of the Milky way

Astrophysics and Space Science, 1999
A two-dimensional chemodynamical model of the Milky Way Galaxy is presented that can account for the structural, kinematical, and chemical pecularities of the galactic components in a self-consistent way. The dynamics of three stellar components and the multi-phase interstellar medium consisting of clouds and intercloud gas are followed in detail. Mass
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CNO Evolution: Milky Way, Dwarf Galaxies and DLAs

Astrophysics and Space Science, 2003
We compute the evolution of the C, N, O and Fe abundances as a function of time and galactocentric distance in the Milky Way (MW) for different sets of stellar yields. We then apply the ‘best’ nucleosynthesis prescriptions found for the MW to other galaxies.
Cristina Chiappini, Donatella Romano, Francesca Matteucci   +2 more
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EVOLUTION OF THE MILKY WAY DISK

2006
The Solar neighbourhood is where the physical basis for models of the evolu- tion of spiral galaxy disks can be tested most stringently. A new survey has provided full space motions, metallicities, ages, and duplicity information for over 14,000 nearby F and G dwarfs.
Nordström, Birgitta, Andersen, Johannes
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The Chemical Evolution of the Milky Way Disk

Space Science Reviews, 1997
Abstract The chemical evolution of the disk of our Galaxy is studied with numerical models assuming infall and a radially varying star formation rate (SFR). We propose a model with a minimal set of physically plausible assumptions which satisfies the main observational constraints of the disk, including those of the solar neighborhood.
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Chemical evolution in the Milky Way Disk

AIP Conference Proceedings, 2006
Classical models of galactic evolution predict a smooth rise in heavy‐element abundance (metallicity) with time. We test this prediction with a new, large and unbiased sample of long‐lived stars in the solar neighbourhood and find that several of the key tests fail to support the classical predictions.
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