The Substructure Hierarchy in Dark Matter Haloes

Understand

We present a new algorithm for identifying the substructure within simulated dark matter haloes.

• The method is an extension of that proposed by Tormen et al.
• (2004) and Giocoli et al.
• (2008a), which identifies a subhalo as a group of self-bound particles that prior to being accreted by the main progenitor of the host halo belonged to one and the same progenitor halo (hereafter satellite).