Results 11 to 20 of about 230,790 (340)

DLAs and Galaxy Formation [PDF]

open access: yesModern Physics Letters A, 2007
Damped Lyman-alpha systems (DLAs) are useful probes of star formation and galaxy formation at high redshift. We study the physical properties of DLAs and their relationship to Lyman-break galaxies using cosmological hydrodynamic simulations based on the ...
KENTARO NAGAMINE, Pettini M., York D. G.
core   +2 more sources

Galaxy formation [PDF]

open access: yesProceedings 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

Galaxy formation [PDF]

open access: yesSymposium - 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

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

open access: yesChemie 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]

open access: yesEAS 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

open access: yesHepatology, 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

The Intracluster Light and Its Link with the Dynamical State of the Host Group/Cluster: The Role of the Halo Concentration

open access: yesThe Astrophysical Journal, 2023
We investigate the role of halo concentration in the formation of intracluster light (ICL) in galaxy groups and clusters, as predicted by a state-of-the-art semianalytic model of galaxy formation, coupled with a set of high-resolution dark-matter-only ...
Emanuele Contini   +4 more
doaj   +1 more source

The influence of Galactic wind upon the star formation histories of Local Group galaxies [PDF]

open access: yes, 1997
We examine the possibility that ram pressure exerted by the galactic wind from the Galaxy could have stripped gas from the Local Group dwarf galaxies, thereby affecting their star formation histories.
Hirashita, H., Kamaya, H., Mineshige, S.
core   +3 more sources

The Origin of Star Formation in Early-type Galaxies Inferred from Spatially Resolved Spectroscopy

open access: yesThe Astrophysical Journal, 2023
We investigate the origin of star formation activity in early-type galaxies with current star formation using spatially resolved spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory in the Sloan Digital Sky Survey (SDSS).
Yun Hee Lee   +4 more
doaj   +1 more source

Quasars and galaxy formation [PDF]

open access: yes, 1999
Quasars are widely believed to be powered by accretion onto supermassive black holes and there is now considerable evidence for a link between mergers, quasars and the formation of spheroids. Cattaneo, Haehnelt & Rees (1999) have demonstrated that a very
A. Cattaneo, Copi, Schramm
core   +2 more sources

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