Results 1 to 10 of about 5,027,918 (355)

Star Formation during Galaxy Formation [PDF]

open access: yesEAS Publications Series, 2011
Young galaxies are clumpy, gas-rich, and highly turbulent. Star formation appears to occur by gravitational instabilities in galactic disks. The high dispersion makes the clumps massive and the disks thick. The star formation rate should be comparable to the gas accretion rate of the whole galaxy, because star formation is usually rapid and the gas ...
Abraham   +75 more
arxiv   +7 more sources

Galaxy Formation Theory [PDF]

open access: yesPhysics 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
Abadi   +563 more
core   +6 more sources

Formation of Galaxy Clusters [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics, 2012
In this review, we describe our current understanding of cluster formation: from the general picture of collapse from initial density fluctuations in an expanding Universe to detailed simulations of cluster formation including the effects of galaxy ...
Andrey V. Kravtsov   +24 more
core   +6 more sources

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   +4 more sources

Feedback in Galaxy Formation [PDF]

open access: yesProceedings of the International Astronomical Union, 2011
I review the outstanding problems in galaxy formation theory, and the role of feedback in resolving them. I address the efficiency of star formation, the galactic star formation rate, and the roles of supernovae and supermassive black holes.Comment: To ...
Antonuccio-Delogu   +5 more
core   +6 more sources

Quasars and galaxy formation [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 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   +6 more sources

How do galaxies get their baryons? [PDF]

open access: yes, 2011
Understanding how galaxies obtain baryons, their stars and gas, over cosmic time is traditionally approached in two different ways - theoretically and observationally. In general, observational approaches to galaxy formation include measuring basic galaxy properties, such as luminosities, stellar masses, rotation speeds, star formation rates and how ...
Conselice, Christopher J.
arxiv   +3 more sources

Suppression of Star Formation in Galaxy Pairs [PDF]

open access: yesThe Astrophysical Journal
We investigate the suppression of star formation in galaxy pairs based on the isolated galaxy pair sample derived from the Sloan Digital Sky Survey survey.
Shuai Feng   +5 more
doaj   +2 more sources

Quantitative Estimates of Environmental Effects on the Star Formation Rate of Disk Galaxies in Clusters of Galaxies [PDF]

open access: yes, 1998
A simple model is constructed to evaluate the change of star formation rate of a disk galaxy due to environmental effects in clusters of galaxies. Three effects, (1) tidal force from the potential well of the cluster, (2) increase of external pressure when the galaxy plows into the intracluster medium, (3) high-speed encounters between galaxies, are ...
Evrard A. E.   +6 more
arxiv   +4 more sources

Cosmological Constraints from Galaxy Clustering and the Mass-to-Number Ratio of Galaxy Clusters: Marginalizing over the Physics of Galaxy Formation [PDF]

open access: yes, 2013
Many approaches to obtaining cosmological constraints rely on the connection between galaxies and dark matter. However, the distribution of galaxies is dependent on their formation and evolution as well as the cosmological model, and galaxy formation is still not a well-constrained process.
Lu, Yu   +3 more
arxiv   +4 more sources

Home - About - Disclaimer - Privacy