Systematic effects on the diversity of dwarf galaxies rotation curves

Understand

Cosmological simulations of structure formation are invaluable to study the evolution of the Universe and the development of galaxies in it successfully reproducing many observations in the context of the cosmological paradigm $\Lambda$CDM.

• However, there are remarkable discrepancies with observations that are a matter of debate.
• One of the most recently reported is the diversity of shapes in the rotation curves of dwarf galaxies in the local Universe which is in contrast to the apparent homogeneity of rotation curves in cosmological hydrodynamic simulations.
• Previous studies on similar problems have shown that sometimes can be alleviated by accounting for the impact of observational effects in the comparison.