The Mystery of the $\sigma$-Bump -- A new Signature for Major Mergers in Early-type Galaxies?

Anna T. P. Schauer, Rhea-Silvia Remus, Andreas Burkert +1

The stellar velocity dispersion as a function of the galactocentric radius of an early-type galaxy can generally be well approximated by a power law $\sigma \propto r^{\beta }$. However, some o…