766 citations · 13.4k across the 186 of their papers we have counts for
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The X-factor in Galaxies: I. Dependence on Environment and Scale
Robert Feldmann, Nickolay Y. Gnedin, Andrey V. Kravtsov
Characterizing the conversion factor between CO emission and column density of molecular hydrogen, X_CO, is crucial in studying the gaseous content of galaxies, its evolution, and…
Non-Thermal Dark Matter Mimicking An Additional Neutrino Species In The Early Universe
Dan Hooper, Farinaldo S. Queiroz, Nickolay Y. Gnedin
The South Pole Telescope (SPT), Atacama Cosmology Telescope (ACT), and Wilkinson Microwave Anisotropy Probe (WMAP) have each reported measurements of the cosmic microwave backgroun…
Halo Contraction Effect in Hydrodynamic Simulations of Galaxy Formation
Oleg Y. Gnedin, Daniel Ceverino, Nickolay Y. Gnedin +5
The condensation of gas and stars in the inner regions of dark matter halos leads to a more concentrated dark matter distribution. While this effect is based on simple gravitationa…
The impact of baryon physics on the structure of high-redshift galaxies
Marcel Zemp, Oleg Y. Gnedin, Nickolay Y. Gnedin +1
We study the detailed structure of galaxies at redshifts z > 2 using cosmological simulations with improved modeling of the interstellar medium and star formation. The simulations…
Ultra-faint dwarf galaxies as a test of early enrichment and metallicity-dependent star formation
Konstantinos Tassis, Nickolay Y. Gnedin, Andrey V. Kravtsov
The tight relation of star formation with molecular gas indicated by observations and assumed in recent models implies that the efficiency with which galaxies convert their gas int…
Simulations of Early Baryonic Structure Formation with Stream Velocity: I. Halo Abundance
Smadar Naoz, Naoki Yoshida, Nickolay Y. Gnedin
It has been recently shown that the relative velocity between the dark matter and the baryons (vbc) at the time of recombination can affect the structure formation in the early uni…