Results 1 to 10 of about 70 (64)
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 ...
Andrew Benson
exaly +4 more sources
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 ...
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The epoch of galaxy formation [PDF]
Proceedings of the National Academy of Sciences, 1997 Recent advances in technology have enabled astronomers to observe fainter, and more distant, galaxies and to study the processes of galaxy formation and evolution. Recent observations suggest that the bulk of the stars in the universe formed between z = 3 (∼1 × 10^9 years after the big bang) and the present.
Spergel, David N. +2 more
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Galaxy Threshing and the Formation of Ultracompact Dwarf Galaxies [PDF]
The Astrophysical Journal, 2001 Recent spectroscopic and morphological observational studies of galaxies around NGC 1399 in the Fornax Cluster (Drinkwater et al. 2000b) have discovered several `ultra-compact dwarf' galaxies with intrinsic sizes of $\sim$ 100 pc and absolute $B$ band magnitudes ranging from -13 to -11 mag.
Bekki, Kenji +2 more
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The role of submillimetre galaxies in hierarchical galaxy formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We study the role of submillimetre galaxies (SMGs) in the galaxy formation process in the Lambda Cold Dark Matter cosmology. We use the Baugh et al. (2005) semi-analytical model, which matches the observed SMG number counts and redshift distribution by assuming a top-heavy initial mass function (IMF) in bursts triggered by galaxy mergers.
González, J.E. +3 more
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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.
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The Outside‐In Formation of Elliptical Galaxies [PDF]
The Astrophysical Journal, 2006 15 pages, 10 figures, ApJ ...
PIPINO A +2 more
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Triggering Star Formation by Galaxy-Galaxy Interactions [PDF]
Symposium - International Astronomical Union, 2004 We analyzed the effects of having a close companion on the star formation activity of galaxies in the 8K galaxy pair catalog selected from the 2dFGRS. We found that, statistically, galaxies with rp < 25h−1 kpc and ΔV < 100km s−1 have enhanced star formation with respect to isolated galaxies with the same luminosity and redshift distribution.
Tissera, Patricia B. +3 more
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The formation of galaxy discs [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 Galaxy disk formation must incorporate the multiphase nature of the interstellar medium. The resulting two-phase structure is generated and maintained by gravitational instability and supernova energy input, which yield a source of turbulent viscosity that is able to effectively compete in the protodisk phase with early angular momentum loss of the ...
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THE TWO PHASES OF GALAXY FORMATION [PDF]
The Astrophysical Journal, 2010 13 pages, 13 figures, accepted for publication in ...
Oser, L. +4 more
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