The average dust attenuation law at 2<z<7 is empirically measured from stacked SEDs and matches the local starburst curve with R_V=3.98, a flatter UV slope, and no 2175A bump.
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Massive galaxies at z≳9 built stellar mass in bursty episodes with star-formation efficiencies of 0.8–0.9; dust pushes efficiencies above unity unless a top-heavy IMF is allowed.
A multiphase ISM grain-size model with low supernova dust yield reproduces observed dust-to-stellar mass ratios and UV luminosity functions at z=7-12 by letting small grains seed rapid metal accretion.
Application of the Attenuation-Free Model to JWST super-early galaxies yields massive halos with moderate efficiencies and supports an evolutionary sequence from dust-reddened to UV-clear phases driven by outflows.
Bayesian joint constraints show that elevated star formation efficiency accounts for JWST high-z galaxy excess in flat Lambda CDM, without requiring deviations in dark energy equation of state or curvature.
citing papers explorer
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A first empirical derivation of the average dust attenuation law at 2<z<7
The average dust attenuation law at 2<z<7 is empirically measured from stacked SEDs and matches the local starburst curve with R_V=3.98, a flatter UV slope, and no 2175A bump.
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How galaxies acquire their stellar mass at high redshift: High star formation efficiencies and the relative roles of dust and initial mass function
Massive galaxies at z≳9 built stellar mass in bursty episodes with star-formation efficiencies of 0.8–0.9; dust pushes efficiencies above unity unless a top-heavy IMF is allowed.
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Grain-size evolution and rapid dust growth in high-redshift galaxies
A multiphase ISM grain-size model with low supernova dust yield reproduces observed dust-to-stellar mass ratios and UV luminosity functions at z=7-12 by letting small grains seed rapid metal accretion.
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No Blue without Red: Evolutionary Properties of Super-Early Galaxies
Application of the Attenuation-Free Model to JWST super-early galaxies yields massive halos with moderate efficiencies and supports an evolutionary sequence from dust-reddened to UV-clear phases driven by outflows.
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Dark energy, spatial curvature, and star formation efficiency from JWST photometric and spectroscopic high-redshift galaxies
Bayesian joint constraints show that elevated star formation efficiency accounts for JWST high-z galaxy excess in flat Lambda CDM, without requiring deviations in dark energy equation of state or curvature.