Results 1 to 10 of about 217,189 (243)

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

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

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

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

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

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
Abraham   +75 more
core   +4 more sources

Formation and evolution of disk galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2008
Global 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.
Joseph Silk, Matthias, Rocha-Pinto, Tan
core   +6 more sources

The Formation of Galaxy Disks

open access: yes, 2008
We present a new set of multi-million particle SPH simulations of the formation of disk dominated galaxies in a cosmological context. Some of these galaxies are higher resolution versions of the models already described in Governato et al (2007).
Brook, C., Governato, F., Mayer, L.
core   +3 more sources

Fractional yields inferred from halo and thick disk stars [PDF]

open access: yesSerbian Astronomical Journal, 2013
Linear [Q/H]-[O/H] relations, Q = Na, Mg, Si, Ca, Ti, Cr, Fe, Ni, are inferred from a sample (N = 67) of recently studied FGK-type dwarf stars in the solar neighbourhood including different populations (Nissen and Schuster 2010, Ramirez et al ...
Caimmi R.
doaj   +1 more source

Constraints on Fluctuating Star Formation Rates for Intermediate-mass Galaxies with Hα and UV Luminosities

open access: yesThe Astrophysical Journal, 2023
We study the recent star formation histories (SFHs) of 575 intermediate-mass galaxies (IMGs, 10 ^9 ≤ M / M _⊙ ≤ 10 ^10 ) in COSMOS at 0.3 < z < 0.4 by comparing their H α and UV luminosities.
Shannon G. Patel   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy