5–8 Jul 2021
Europe/Rome timezone

The formation of counter-rotating galaxies

Not scheduled
15m

Speaker

Alessandro Pizzella (Padua University)

Description

In recent years, integral-field spectroscopic surveys have revealed that the presence of kinematically-decoupled stellar components is not a rare phenomenon in nearby galaxies. Among the decoupled stellar components, extended large-scale counter-rotation in disk galaxies has been found in a number of objects. The origin of such phenomenon has been demonstrated, at least in some cases, to be the end result of the acquisition of a gas cloud that settled in the disk plane of a disk galaxy and then formed the counter-rotating stellar disk.
In an earlier epoque acquisition events were more frequent and so we expect the formation of counter-rotating disks.
MAVIS-IFS is the prefect instrument to investigate the presence of counter-rotation at z=0.4-0.6.

Primary authors

Alessandro Pizzella (Padua University) Elisa Portaluri (Istituto Nazionale di Astrofisica (INAF))

Presentation materials