Probing the stellar populations and star formation history of early-type galaxies at 0 < z < 1.1 in the rest-frame ultraviolet
arxiv（2024）
摘要
We measure the evolution of the rest-frame NUV-V colors for early-type
galaxies in clusters at 03. The blue UV colors of early-type
galaxies at low-intermediate redshifts are likely driven by this sub-population
being enriched in helium up to ∼44%. At z>0.8 (when the extra UV
component has not yet appeared) the data allows us to constrain the star
formation histories of galaxies by fitting models to the evolution of their UV
colors: we find that the epoch at which the stellar populations formed ranges
between 3更多
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