Results 11 to 20 of about 5,628 (224)
The formation and evolution of massive galaxies [PDF]
Research in Astronomy and Astrophysics, 2021 Abstract The discovery of massive galaxies at high redshifts, especially the passive ones, poses a big challenge for the current standard galaxy formation models. Here we use the semi-analytic galaxy formation model developed by Henriques et al.
Jing, Ying-Jie +4 more
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Cosmological evolution and hierarchical galaxy formation [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 We provide a new multi-waveband compilation of the data describing the cosmological evolution of quasars, and discuss a model that attributes the evolution to variation in the rate of merging between dark halos in a hierarchical universe. We present a new Press-Schechter calculation of the expected merger rate and show that this can reproduce the ...
Percival, W, Miller, L
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GAIA: Composition, formation and evolution of the Galaxy [PDF]
Astronomy & Astrophysics, 2001 Accepted by A&A: 25 pages, 8 ...
Perryman, M.A.C. +9 more
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Targeted decrease of portal hepatic pressure gradient improves ascites control after TIPS
Hepatology, EarlyView., 2022 The river diagram demonstrates that after transjugular intrahepatic portosystemic shunt insertion (TIPS) the majority of patients without ascites and 50% of the patients with ascites detectable at ultrasound, show the best response in the long term follow‐up.
Alexander Queck +14 more
wiley +1 more source
Formation and Evolution of Disk Galaxies [PDF]
Proceedings of the International Astronomical Union, 2003 AbstractGlobal star formation is the key to understanding galaxy disk formation. This in turn depends on gravitational instability of disks and continuing gas accretion as well as minor merging. A key component is feedback from supernovae. Primary observational constraints on disk galaxy formation and evolution include the Schmidt-Kennicutt law, the ...
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Galaxy formation and evolution: low-surface-brightness galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We investigate in detail the hypothesis that low surface brightness galaxies (LSB) differ from ordinary galaxies simply because they form in halos with large spin parameters. We compute star formation rates using the Schmidt law, assuming the same gas infall dependence on surface density as used in models of the Milky Way.
Jimenez, Raul +3 more
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Chemodynamical Modelling of Galaxy Formation and Evolution [PDF]
Astrophysics and Space Science, 2002 We present our recently developed 3-dimensional chemodynamical code for galaxy evolution. This code follows the evolution of different galactic components like stars, dark matter and different components of the interstellar medium (ISM), i.e. a diffuse gaseous phase and the molecular clouds.
Berczik, Peter +3 more
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Galaxy Formation and Evolution [PDF]
, 2005 We take a multi-faceted approach to study galaxy populations in the local universe, using the completed Two Degree Field Galaxy Redshift Survey (2dFGRS), the ``Millennium Run'' LCDM N-body simulation, and a semi-analytic model of galaxy formation. Our investigation covers both small and large scale aspects of the galaxy distribution.
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Galaxy Formation and Chemical Evolution
International Journal of Astronomy and Astrophysics, 2014 14 pages, 5 ...
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The evolution of galaxy formation [PDF]
Astronomy & Geophysics, 2011 Our history of understanding galaxy formation could be traced through the development of individual ideas. A cynic might be tempted to suggest that new catchphrases are developed at a faster rate than genuine progress is made.
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