Results 11 to 20 of about 14,161 (262)
Proceedings of the National Academy of Sciences, 1998 It is argued that within the standard Big Bang cosmological model the bulk of the mass of the luminous parts of the large galaxies likely had been assembled by redshift z ∼ 10. Galaxy assembly this early would be difficult to fit in the widely discussed adiabatic cold dark matter model for structure formation ...
+5 more sources
Symposium - International Astronomical Union, 1987 Theories of galaxy formation via hierarchical clustering of cold dark matter and by fragmentation of gaseous pancakes or shells are reviewed and compared. Dissipative processes are crucial to all theories of galaxy formation, and are discussed in terms of a simple model involving multiple cloud interactions.
openaire +1 more source
Physics Reports, 2010 We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical and numerical understanding of how baryons condense into galaxies, what determines the structure of those ...
openaire +3 more sources
Chemie Ingenieur Technik, EarlyView., 2023 Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley +1 more source
Star Formation During Galaxy Formation [PDF]
EAS Publications Series, 2011 14 pages, 1 figure, Ecole Evry Schatzman 2010: Star Formation in the Local Universe.
openaire +2 more sources
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
Joint galaxy–galaxy lensing and clustering constraints on galaxy formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We compare predictions for galaxy–galaxy lensing profiles and clustering from the Henriques et al. public version of the Munich semi-analytical model (SAM) of galaxy formation and the IllustrisTNG suite, primarily TNG300, with observations from KiDS + GAMA and SDSS-DR7 using four different selection functions for the lenses ...
Malin Renneby +7 more
openaire +4 more sources
Two-phase galaxy formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We propose and test a scenario for the assembly and evolution of luminous matter in galaxies which substantially differs from that adopted by other semianalytic models. As for the dark matter (DM), we follow the detailed evolution of halos within the canonical LCDM cosmology using standard Montecarlo methods.
Cook, M, . Lapi, A., Granato, G. L.
openaire +4 more sources
Galaxy Formation: Isocam Counts [PDF]
Symposium - International Astronomical Union, 1996 Detailed observations in the optical do not allow to discriminate between the following scenarii of galaxy formation: - synchronous formation at large redshift (z > 7). - hierarchical merging, down to z ≤ 1, of proto-galactic lumps formed at very high redshift (≈ 10).
C.J. Cesarsky, D. Elbaz
openaire +1 more source
Proceedings of the International School of Physics “Enrico Fermi”, 1995 A review on numerical simulations of galaxy formation is given. Different numerical methods to solve collisionless and gas dynamical systems are outlined and one particular simulation technique, Smoothed Particle Hydrodynamics, is discussed in some detail. After a short discussion of the most relevant physical processes which affect the dynamics of the
openaire +3 more sources