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The Ultraviolet Slopes of Early Universe Galaxies: The Impact of Bursty Star Formation, Dust, and Nebular Continuum Emission
Desika Narayanan, Daniel P. Stark, Steven L. Finkelstein +8
JWST has enabled the detection of the UV continuum of galaxies at z>10, evidencing a population of extremely blue, potentially dust-free galaxies. Interpreting the UV spectra of ga…
Simba-EoR: Early galaxy formation in the Simba simulation including a new sub-grid interstellar medium model
Ewan Jones, Britton Smith, Romeel Davé +2
We update the dust model present within the Simba galaxy simulations with a self-consistent framework for the co-evolution of dust and molecular hydrogen populations in the interst…
Outshining by Recent Star Formation Prevents the Accurate Measurement of High-z Galaxy Stellar Masses
Desika Narayanan, Sidney Lower, Paul Torrey +10
In this paper, we demonstrate that the inference of galaxy stellar masses via spectral energy distribution (SED) fitting techniques for galaxies formed in the first billion years a…
A Framework for Modeling Polycyclic Aromatic Hydrocarbon Emission in Galaxy Evolution Simulations
Desika Narayanan, J. D. Smith, Brandon Hensley +7
We present a new methodology for simulating mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) in galaxy evolution simulations. To do this, we combine theoretical m…
Cosmic Sands: The Origin of Dusty, Star-forming Galaxies in the Epoch of Reionization
Sidney Lower, Desika Narayanan, Qi Li +1
We present the Cosmic Sands suite of cosmological zoom-in simulations based on the Simba galaxy formation model in order to study the build up of the first massive and dusty galaxi…
The Origin of the Dust Extinction Curve in Milky Way-like Galaxies
Qi Li, Desika Narayanan, Paul Torrey +2
We develop a cosmological model for the evolution of dust grains in galaxies with a distribution of sizes in order to understand the origin of the Milky Way dust extinction curve.…