The Unorthodox Orbits of Substructure Halos

• Published in: The Astrophysical journal Vol. 692; no. 1; pp. 931 - 941
• Main Authors: Ludlow, Aaron D, Navarro, Julio F, Springel, Volker, Jenkins, Adrian, Frenk, Carlos S, Helmi, Amina
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 10.02.2009; IOP
• Subjects: Astronomy; Earth, ocean, space; Exact sciences and technology; Galaxy halo; methods: N-body simulations; Galaxies; Dark matter; Dynamics; Digital simulation; Kinematics; N body system; Orbits; Substructure; galaxies: kinematics and dynamics; galaxies: halos

We use a suite of cosmological N-body simulations to study the properties of substructure halos (subhalos) in galaxy-sized cold dark matter halos. We extend prior work on the subject by considering the whole population of subhalos physically associated with the main system. These are defined as subh...