Connecting large-scale structures to galaxy morphology

Higgs Centre colloquium

Connecting large-scale structures to galaxy morphology

  • Event time: 1:00pm until 2:00pm
  • Event date: 22nd April 2016
  • Speaker: (Institut Astrophysique de Paris)
  • Location: Higgs Centre Seminar Room,

Event details

Abstract

Galactic morphology is driven by angular momentum acquisition through anisotropic secondary infall,  coming from larger scales, which are less dense, hence more steady.   Cold flows provide the link and leave a clear signature in terms of spin alignment. Galaxies are  first aligned and then perpendicular to their host filaments.

This can be explained via Lagrangian theory, which traces back the morphology of galaxies to the ICs.

The spin flip can also be understood in an Eulerian framework  while studying  the vorticity content of filaments  and the effect of mergers.