Results 51 to 60 of about 429,650 (351)
Formation and evolution of disk galaxies [PDF]
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 +1 more source
Abstract The present theories of galaxy formation are reviewed. The relation between peculiar velocities and the correlation function of galaxies points to the possibility that galaxies do not form uniformly everywhere. Scale invariant properties of the cluster-cluster correlations are discussed. Comparing the correlation functions in a dimensionless
Alexander S. Szalay, Alexander S. Szalay
openaire +2 more sources
The role of submillimetre galaxies in hierarchical galaxy formation [PDF]
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
openaire +6 more sources
Properties of Galaxy Groups in the SDSS: II.- AGN Feedback and Star Formation Truncation [PDF]
Successfully reproducing the galaxy luminosity function and the bimodality in the galaxy distribution requires a mechanism that can truncate star formation in massive haloes.
B. Moore+6 more
core +3 more sources
Genome‐wide identification and biological relevance of broccoli aquaporins
Abstract Broccoli (Brassica oleracea var. italica) is an important crop worldwide, and its regular consumption is associated with health benefits due to the presence of various bioactive compounds. An optimal water balance and homeostasis are needed for plant growth; in this sense, aquaporins play a crucial role.
Juan Nicolas‐Espinosa+1 more
wiley +1 more source
Dwarf galaxy formation induced by galaxy interactions [PDF]
Growing evidence has been accumulated for that some gas-rich dwarf galaxies are formed from material liberated by galaxy collisions and/or mergers. Also, gas-poor dwarf elliptical galaxies are often found in the central regions of clusters of galaxies.
arxiv +1 more source
On the Formation of Elliptical Galaxies [PDF]
Simple collapse and violent relaxation models produce sharply cut off envelopes with ϱ(r) ∝ r–4, whereas actual elliptical galaxies have more extended envelopes approximately given by ϱ(r) ∝ r–3 as implied by Hubble's Law. Numerical models are presented, showing that when cosmological infall effects are included, galaxies are produced with more ...
openaire +3 more sources
The properties of satellite galaxies in simulations of galaxy formation [PDF]
17 pages, 11 figures, accepted for publication in ...
Carlos S. Frenk+5 more
openaire +4 more sources
The Science of Galaxy Formation [PDF]
AbstractOur knowledge of the Universe remains discovery-led: in the absence of adequate physics-based theory, interpretation of new results requires a scientific methodology. Commonly, scientific progress in astrophysics is motivated by the empirical success of the “Copernican Principle”, that the simplest and most objective analysis of observation ...
openaire +2 more sources
Breaking the hierarchy of galaxy formation [PDF]
11 pages, 8 colour figures. Accepted for publication in MNRAS. Galaxy catalogues are available for down load from http://www.icc.dur.ac.uk/
Bower, R. G.+7 more
openaire +5 more sources