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42 papers · 1 filter
Constraining r-process nucleosynthesis with multi-objective Galactic chemical evolution models
M. Molero, A. Arcones, F. Montes +1
The astrophysical site(s) of the r-process are uncertain, with candidates such as neutron star mergers and magneto-rotational supernovae predicting different event rates, delay tim…
Figuring Out Gas & Galaxies In Enzo (FOGGIE) VI: The Circumgalactic Medium of Galaxies is Supported in an Emergent, Non-Hydrostatic Equilibrium
Cassandra Lochhaas, Jason Tumlinson, Molly S. Peeples +9
The circumgalactic medium (CGM) is often assumed to exist in or near hydrostatic equilibrium with the regulation of accretion and the effects of feedback treated as perturbations t…
KODIAQ-Z: Metals and Baryons in the Cool Intergalactic and Circumgalactic Gas at 2.2<z<3.6
Nicolas Lehner, Claire Kopenhafer, John O'Meara +8
We present the KODIAQ-Z survey aimed to characterize the cool, photoionized gas at 2.2<z<3.6 in 202 HI-selected absorbers with 14.6<log N(HI)<20, i.e., the gaseous interface betwee…
Some First Stars Were Red: Detecting Signatures of Massive Population III Formation Through Long-Term Stochastic Color Variations
Tyrone E. Woods, Chris J. Willott, John A. Regan +4
Identifying stars formed in pristine environments (Pop III) within the first billion years is vital to uncovering the earliest growth and chemical evolution of galaxies. Pop III ga…
On the Evolution of Supermassive Primordial Stars in Cosmological Flows
Tyrone E. Woods, Samuel Patrick, Jacob S. Elford +2
Primordial supermassive stars (SMSs) formed in atomic-cooling halos at z ~ 15 - 20 are leading candidates for the seeds of the first quasars. Past numerical studies of the evolutio…
Figuring Out Gas & Galaxies In Enzo (FOGGIE) V: The Virial Temperature Does Not Describe Gas in a Virialized Galaxy Halo
Cassandra Lochhaas, Jason Tumlinson, Brian W. O'Shea +5
The classical definition of the virial temperature of a galaxy halo excludes a fundamental contribution to the energy partition of the halo: the kinetic energy of non-thermal gas m…