Disc galaxies are still settling. Discovery of the smallest nuclear discs and their young stellar bars
When galactic discs settle and become massive enough, they are able to form stellar bars. These non-axisymmetric structures induce shocks in the gas, causing it to flow to the centre where nuclear structures, such as nuclear discs and rings, are formed. Previous theoretical and observational studies have hinted at the co-evolution of bars and
de Sá-Freitas, Camila et al.
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2023