The star formation histories of fossil group galaxies
I.G. de la Rosa, R.N. Proctor, C. Mendes de Oliveira, D.A. Forbes, R., Cid Fernandes, A. Mateus
TL;DR
This study compares the star formation histories of early-type galaxies in fossil groups, clusters, and low-density environments, revealing that fossils are often younger and may evolve into isolated ETGs.
Contribution
It provides new insights into the evolutionary pathways of fossil group galaxies compared to other environments.
Findings
Fossil group ETGs are often younger than their counterparts.
Fossils may serve as precursors to isolated early-type galaxies.
Similar overall evolutionary histories across environments.
Abstract
A comparison is carried out among the star formation histories of early-type galaxies (ETG) in fossil groups, clusters and low density environments. Although they show similar evolutionary histories, a significant fraction of the fossils are younger than their counterparts, suggesting that fossils can be precursors of the isolated ETGs.
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