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On the Origin of the Galaxy Star-Formation-Rate Sequence: Evolution and Scatter
Aaron A. Dutton, Frank C. van den Bosch, Avishai Dekel
We use a semi-analytic model for disk galaxies to explore the origin of the time evolution and small scatter of the galaxy SFR sequence -- the tight correlation between star-format…
The Impact of cold gas accretion above a mass floor on galaxy scaling relations
N. Bouche, A. Dekel, R. Genzel +6
Using the cosmological baryonic accretion rate and normal star formation efficiencies, we present a very simple model for star-forming galaxies (SFGs) that accounts for the mass an…
The role of black holes in galaxy formation and evolution
A. Cattaneo, S. M. Faber, J. Binney +14
Virtually all massive galaxies, including our own, host central black holes ranging in mass from millions to billions of solar masses. The growth of these black holes releases vast…
High-redshift clumpy discs and bulges in cosmological simulations
Daniel Ceverino, Avishai Dekel, Frederic Bournaud
We analyze the first cosmological simulations that recover the fragmentation of high-redshift galactic discs driven by cold streams. The fragmentation is recovered owing to an AMR…
Morphological quenching of star formation: making early-type galaxies red
Marie Martig, Frederic Bournaud, Romain Teyssier +1
We point out a natural mechanism for quenching of star formation in early-type galaxies. It automatically links the color of a galaxy with its morphology and does not require gas c…
Universal Merger Histories of Dark-Matter Haloes
Eyal Neistein, Andrea V. Maccio', Avishai Dekel
We study merger histories of dark-matter haloes in a suite of N-body simulations that span different cosmological models. The simulated cases include the up-to-date WMAP5 cosmology…
Formation of Massive Galaxies at High Redshift: Cold Streams, Clumpy Disks and Compact Spheroids
Avishai Dekel, Re'em Sari, Daniel Ceverino
We present a simple theoretical framework for massive galaxies at high redshift, where the main assembly and star formation occurred, and report on the first cosmological simulatio…