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A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology

Müller, Oliver; Pawlowski, Marcel S.; Jerjen, Helmut; Lelli, Federico


The Milky Way and Andromeda galaxies are each surrounded by a thin plane of satellite dwarf galaxies that may be corotating. Cosmological simulations predict that most satellite galaxy systems are close to isotropic with random motions, so those two well-studied systems are often interpreted as rare statistical outliers. We test this assumption using the kinematics of satellite galaxies around the Centaurus A galaxy. Our statistical analysis reveals evidence for corotation in a narrow plane: Of...[Show more]

CollectionsANU Research Publications
Date published: 2018-02-02
Type: Journal article
Source: Science
DOI: 10.1126/science.aao1858
Access Rights: Open Access


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