106 citations · 696 across the 13 of their papers we have counts for
13 papers
Chemistry and radiative shielding in star forming galactic disks
Chalence Safranek-Shrader, Mark R. Krumholz, Chang-Goo Kim +5
To understand the conditions under which dense, molecular gas is able to form within a galaxy, we post-process a series of three-dimensional galactic-disk-scale simulations with ra…
Toward extremely metal poor stars
Jeremy S. Ritter, Chalence Safranek-Shrader, Milos Milosavljevic +1
Extremely metal poor stars have been the focus of much recent attention owing to the expectation that their chemical abundances can shed light on the metal and dust yields of the e…
Star Formation for Predictive Primordial Galaxy Formation
Milos Milosavljevic, Chalence Safranek-Shrader
The elegance of inflationary cosmology and cosmological perturbation theory ends with the formation of the first stars and galaxies, the initial sources of light that launched the…
Abundance anomalies in metal-poor stars from Population III supernova ejecta hydrodynamics
Alan Sluder, Jeremy Ritter, Chalence Safranek-Shrader +2
We present a simulation of the long-term evolution of a Population III supernova remnant in a cosmological minihalo. Employing passive Lagrangian tracer particles, we investigate h…
Star formation in the first galaxies - III. Formation, evolution, and characteristics of the first stellar cluster
Chalence Safranek-Shrader, Michael Montgomery, Milos Milosavljevic +1
We simulate the formation of a low metallicity (0.01 Zsun) stellar cluster in a dwarf galaxy at redshift z~14. Beginning with cosmological initial conditions, the simulation utiliz…
Primordial star clusters at extreme magnification
Erik Zackrisson, Juan Gonzalez, Simon Eriksson +4
Gravitationally lensed galaxies with magnification ~10-100 are routinely detected at high redshifts, but magnifications significantly higher than this are hampered by a combination…
The Lyman-alpha signature of the first galaxies
Aaron Smith, Chalence Safranek-Shrader, Volker Bromm +1
We present the Cosmic Lyman- Transfer code (COLT), a massively parallel Monte-Carlo radiative transfer code, to simulate Lyman- (Ly) resonant scattering through neutral hy…
Metal Transport and Chemical Heterogeneity in Early Star Forming Systems
Jeremy S. Ritter, Alan Sluder, Chalence Safranek-Shrader +2
To constrain the properties of the first stars with the chemical abundance patterns observed in metal-poor stars, one must identify any non-trivial effects that the hydrodynamics o…
Formation of the First Low-Mass Stars from Cosmological Initial Conditions
Chalence Safranek-Shrader, Milos Milosavljevic, Volker Bromm
We simulate the formation of a metal-poor (10^-2 Zsun) stellar cluster in one of the first galaxies to form in the early Universe, specifically a high-redshift atomic cooling halo…
Star Formation in the First Galaxies - II: Clustered Star Formation and the Influence of Metal Line Cooling
Chalence Safranek-Shrader, Milos Milosavljevic, Volker Bromm
Population III stars are believed to have been more massive than typical stars today and to have formed in relative isolation. The thermodynamic impact of metals is expected to ind…
Star Formation in the First Galaxies I: Collapse Delayed by Lyman-Werner Radiation
Chalence Safranek-Shrader, Meghann Agarwal, Christoph Federrath +3
We investigate the process of metal-free star formation in the first galaxies with a high-resolution cosmological simulation. We consider the cosmologically motivated scenario in w…
Confined Population III Enrichment and the Prospects for Prompt Second-Generation Star Formation
Jeremy S. Ritter, Chalence Safranek-Shrader, Orly Gnat +2
It is widely recognized that nucleosynthetic output of the first, Population III supernovae was a catalyst defining the character of subsequent stellar generations. Most of the wor…
Fragmentation in the First Galaxies
Chalence Safranek-Shrader, Volker Bromm, Milos Milosavljevic
We study the gravitational fragmentation of cold accretion streams flowing into a typical first galaxy. We use a one-zone hydrodynamical model to examine the thermal evolution of t…