2.3k citations · 46.3k across the 327 of their papers we have counts for
11 papers · 2 filters
Compaction-Driven Black Hole Growth
Sharon Lapiner, Avishai Dekel, Yohan Dubois
We study the interplay between galaxy evolution and central black-hole (BH) growth using the {NewHorizon} cosmological simulation. BH growth is slow when the dark-matter halo is be…
The nature of giant clumps in high-z discs: a deep-learning comparison of simulations and observations
Omri Ginzburg, Marc Huertas-Company, Avishai Dekel +4
We use deep learning to explore the nature of observed giant clumps in high-redshift disc galaxies, based on their identification and classification in cosmological simulations. Si…
Evaluating Galaxy Dynamical Masses From Kinematics and Jeans Equilibrium in Simulations
Michael Kretschmer, Avishai Dekel, Jonathan Freundlich +3
We provide prescriptions to evaluate the dynamical mass () of galaxies from kinematic measurements of stars or gas using analytic considerations and the VELA suite of…
Structural evolution in massive galaxies at z~2
Ken-ichi Tadaki, Sirio Belli, Andreas Burkert +18
We present 0.2arcsec-resolution Atacama Large Millimeter/submillimeter Array observations at 870 m in a stellar mass-selected sample of 85 massive ($M_\mathrm{star}>10^{11}~M_\o…
OVI Traces Photoionized Streams With Collisionally Ionized Boundaries in Cosmological Simulations of Massive Galaxies
Clayton Strawn, Santi Roca-Fàbrega, Nir Mandelker +6
We analyse the distribution and origin of OVI in the Circumgalactic Medium (CGM) of dark-matter haloes of M at in the VELA cosmological zoom-in simu…
The relationship between fine galaxy stellar morphology and star formation activity in cosmological simulations: a deep learning view
Lorenzo Zanisi, Marc Huertas-Company, Francois Lanusse +10
Hydrodynamical simulations of galaxy formation and evolution attempt to fully model the physics that shapes galaxies. The agreement between the morphology of simulated and real gal…
Stellar Masses of Giant Clumps in CANDELS and Simulated Galaxies Using Machine Learning
M. Huertas-Company, Y. Guo, O. Ginzburg +12
A significant fraction of high redshift star-forming disc galaxies are known to host giant clumps, whose nature and role in galaxy evolution are yet to be understood. In this work…
Rotation Curves in z~1-2 Star-Forming Disks: Evidence for Cored Dark Matter Distributions
R. Genzel, S. H. Price, H. Übler +22
We report high quality, Halpha or CO rotation curves (RCs) to several Re for 41 large, massive, star-forming disk galaxies (SFGs), across the peak of cosmic galaxy evolution (z~0.6…
SatGen: a semi-analytical satellite galaxy generator -- I. The model and its application to Local-Group satellite statistics
Fangzhou Jiang, Avishai Dekel, Jonathan Freundlich +5
We present a semi-analytic model of satellite galaxies, SatGen, which can generate large samples of satellite populations for a host halo of desired mass, redshift, and assembly hi…
The Dekel-Zhao profile: A mass-dependent dark-matter density profile with flexible inner slope and analytic potential, velocity dispersion, and lensing properties
Jonathan Freundlich, Fangzhou Jiang, Avishai Dekel +6
We explore a function with two shape parameters for the dark-matter halo density profile subject to baryonic effects, which is a special case of the general Zhao family of models a…
Origin of Star-Forming Rings around Massive Centres in Massive Galaxies at
Avishai Dekel, Sharon Lapiner, Omri Ginzburg +9
Using analytic modeling and simulations, we address the origin of an abundance of star-forming, clumpy, extended gas rings about massive central bodies in massive galaxies at $z \!…