Image Details
Caption: Figure 6.
The fraction of galaxies with prolate stellar structures (top row), inner halos (middle row), and outer halos (bottom row) as a function of filament density, stellar mass, and redshift in TNG50. Lower-mass galaxies and (primarily inner) halos are more prolate, but at fixed mass, early low-mass structures are more likely to be prolate at lower filament density.
© 2026. The Author(s). Published by the American Astronomical Society.