2.3k citations · 46.3k across the 327 of their papers we have counts for
20 papers · 1 filter
Wet Disc Contraction to Galactic Blue Nuggets and Quenching to Red Nuggets
Avishai Dekel, Andreas Burkert
We study the origin of high-redshift, compact, quenched spheroids (red nuggets) through the dissipative shrinkage of gaseous discs into compact star-forming systems (blue nuggets).…
On the origin of the fundamental metallicity relation and the scatter in galaxy scaling relations
John C. Forbes, Mark R. Krumholz, Andreas Burkert +1
We present a simple toy model to understand what sets the scatter in star formation and metallicity of galaxies at fixed mass. The scatter ultimately arises from the intrinsic scat…
The Population of Giant Clumps in Simulated High-z Galaxies: In-situ and Ex-situ, Migration and Survival
Nir Mandelker, Avishai Dekel, Daniel Ceverino +3
We study the properties of giant clumps and their radial gradients in high- disc galaxies using AMR cosmological simulations. Our sample consists of 770 snapshots in the redshif…
A Rapidly Star-forming Galaxy 700 Million Years After the Big Bang at z=7.51
S. L. Finkelstein, C. Papovich, M. Dickinson +18
Out of several dozen z > 7 candidate galaxies observed spectroscopically, only five have been confirmed via Lyman-alpha emission, at z=7.008, 7.045, 7.109, 7.213 and 7.215. The sma…
The Progenitors of the Compact Early-Type Galaxies at High-Redshift
Christina C. Williams, Mauro Giavalisco, Paolo Cassata +19
We use GOODS and CANDELS images to identify progenitors of massive (log M > 10 Msun) compact "early-type" galaxies (ETGs) at z~1.6. Since merging and accretion increase the size of…
A Link Between Star Formation Quenching and Inner Stellar Mass Density in SDSS Central Galaxies
Jerome J. Fang, S. M. Faber, David C. Koo +1
We study the correlation between galaxy structure and the quenching of star formation using a sample of SDSS central galaxies with stellar masses 9.75< log M_*/M_sun<11.25 and reds…
The AGORA High-Resolution Galaxy Simulations Comparison Project
Ji-hoon Kim, Tom Abel, Oscar Agertz +43
We introduce the AGORA project, a comprehensive numerical study of well-resolved galaxies within the LCDM cosmology. Cosmological hydrodynamic simulations with force resolutions of…
Confronting Simulations of Optically Thick Gas in Massive Halos with Observations at z=2-3
Michele Fumagalli, Joseph F. Hennawi, J. Xavier Prochaska +4
Cosmological hydrodynamic simulations predict the physical state of baryons in the circumgalactic medium (CGM), which can be directly tested via quasar absorption line observations…
The long lives of giant clumps and the birth of outflows in gas-rich galaxies at high redshift
Frederic Bournaud, Valentin Perret, Florent Renaud +13
Star-forming disk galaxies at high redshift are often subject to violent disk instability, characterized by giant clumps whose fate is yet to be understood. The main question is wh…
CANDELS: The correlation between galaxy morphology and star formation activity at z~2
Bomee Lee, Mauro Giavalisco, Christina C. Williams +13
We discuss the state of the assembly of the Hubble Sequence in the mix of bright galaxies at redshift 1.4< z \le 2.5 with a large sample of 1,671 galaxies down to H_{AB}~26, select…
A sub-parsec resolution simulation of the Milky Way: Global structure of the ISM and properties of molecular clouds
F. Renaud, F. Bournaud, E. Emsellem +9
We present a self-consistent hydrodynamical simulation of a Milky Way-like galaxy, at the resolution of 0.05 pc. The model includes star formation and a new implementation of stell…
Radiative feedback and the low efficiency of galaxy formation in low-mass haloes at high redshift
Daniel Ceverino, Anatoly Klypin, Elizabeth Klimek +4
Any successful model of galaxy formation needs to explain the low rate of star formation in the small progenitors of today's galaxies. This inefficiency is necessary for reproducin…
The Redshift and Mass Dependence on the Formation of The Hubble Sequence at z>1 from CANDELS/UDS
Alice Mortlock, Christopher J. Conselice, William G. Hartley +16
In this paper we present a detailed study of the structures and morphologies of a sample of 1188 massive galaxies with Mstar>10^10Msun between redshifts z=1-3 within the Ultra Deep…
Balance among gravitational instability, star formation, and accretion determines the structure and evolution of disk galaxies
John C. Forbes, Mark R. Krumholz, Andreas Burkert +1
Over the past 10 Gyr, star-forming galaxies have changed dramatically, from clumpy and gas rich, to rather quiescent stellar-dominated disks with specific star formation rates lowe…
CANDELS Observations of the Environmental Dependence of the Color-Mass-Morphology Relation at z = 1.6
Robert Bassett, Casey Papovich, Jennifer M. Lotz +16
We study the environmental dependence of color, stellar mass, and morphology by comparing galaxies in a forming cluster to those in the field at z = 1:6 with Hubble Space Telescope…
Structural Evolution of Early-type Galaxies to z=2.5 in CANDELS
Yu-Yen Chang, Arjen van der Wel, Hans-Walter Rix +18
Projected axis ratio measurements of 880 early-type galaxies at redshifts 1<z<2.5 selected from CANDELS are used to reconstruct and model their intrinsic shapes. The sample is sele…
Steady Outflows in Giant Clumps of High-z Disk Galaxies During Migration and Growth by Accretion
Avishai Dekel, Mark R. Krumholz
We predict the evolution of giant clumps undergoing star-driven outflows in high-z gravitationally unstable disk galaxies. We find that the mass loss is expected to occur through a…
Toy Models for Galaxy Formation versus Simulations
A. Dekel, A. Zolotov, D. Tweed +3
We describe simple useful toy models for key processes of galaxy formation in its most active phase, at z > 1, and test the approximate expressions against the typical behaviour in…
The Morphologies of Massive Galaxies at 1 < z < 3 in the CANDELS-UDS Field
V. A. Bruce, J. S. Dunlop, M. Cirasuolo +16
We have used high-resolution, HST WFC3/IR, near-infrared imaging to conduct a detailed bulge-disk decomposition of the morphologies of ~200 of the most massive (M_star > 10^11 M_so…
The star-forming progenitors of massive red galaxies
Andrea Cattaneo, Joanna Woo, Avishai Dekel +1
The link between massive red galaxies in the local Universe and star-forming galaxies at high redshift is investigated with a semi-analytic model that has proven successful in many…