Assembly of filamentary void galaxy configurations

Understand

We study the formation and evolution of filamentary configurations of dark matter haloes in voids.

• Our investigation uses the high-resolution LambdaCDM simulation CosmoGrid to look for void systems resembling the VGS_31 elongated system of three interacting galaxies that was recently discovered by the Void Galaxy Survey (VGS) inside a large void in the SDSS galaxy redshift survey.
• HI data revealed these galaxies to be embedded in a common elongated envelope, possibly embedded in intravoid filament.
• In the CosmoGrid simulation we look for systems similar to VGS_31 in mass, size and environment.