A data-driven model using UV luminosity functions and halo accretion matching predicts star formation efficiencies peaking at 0.8-0.9 at z>9, with bursty formation and the need for variable IMF or dust to avoid unphysical values.
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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
A data-driven model using UV luminosity functions and halo accretion matching predicts star formation efficiencies peaking at 0.8-0.9 at z>9, with bursty formation and the need for variable IMF or dust to avoid unphysical values.