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Elevated UV luminosity density at Cosmic Dawn explained by non-evolving, weakly mass-dependent star formation efficiency
Robert Feldmann, Michael Boylan-Kolchin, James S. Bullock +11
Recent observations with the James Webb Space Telescope (JWST) have uncovered unexpectedly high cosmic star formation activity in the early Universe, mere hundreds of millions of y…
Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation
Philip F. Hopkins, Dusan Keres, Jose Onorbe +4
We present a series of high-resolution cosmological simulations of galaxy formation to z=0, spanning halo masses ~10^8-10^13 M_sun, and stellar masses ~10^4-10^11. Our simulations…
Moving mesh cosmology: tracing cosmological gas accretion
Dylan Nelson, Mark Vogelsberger, Shy Genel +4
We investigate the nature of gas accretion onto haloes and galaxies at z=2 using cosmological hydrodynamic simulations run with the moving mesh code AREPO. Implementing a Monte Car…
Accretion Does Not Drive the Turbulence in Galactic Disks
Philip F. Hopkins, Dusan Keres, Norman Murray
Rapid accretion of cold gas plays a crucial role in getting gas into galaxies. It has been suggested that this accretion proceeds along narrow streams that might also directly driv…
Stellar Feedback & Bulge Formation in Clumpy Disks
Philip F. Hopkins, Dusan Keres, Norman Murray +2
We use numerical simulations of isolated galaxies to study the effects of stellar feedback on the formation and evolution of giant star-forming gas 'clumps' in high-redshift, gas-r…
Moving mesh cosmology: numerical techniques and global statistics
Mark Vogelsberger, Debora Sijacki, Dusan Keres +2
We present the first hydrodynamical simulations of structure formation using the new moving mesh code AREPO and compare the results with GADGET simulations based on a traditional s…