Mismatch and misalignment: dark haloes and satellites of disc galaxies
- A. Deason, I. McCarthy, T. Theuns
- Physics
- 4 January 2011
We study the phase-space distribution of satellite galaxies associated with late-type galaxies in the GIMIC suite of simulations. GIMIC consists of resimulations of five cosmologically representative…
The velocity shear tensor: tracer of halo alignment
- N. Libeskind, Y. Hoffman, A. Klypin
- Physics
- 16 October 2012
The alignment of dark matter (DM) halos and the surrounding large scale structure (LSS) is examined in the context of the cosmic web. Halo spin, shape and the orbital angular momentum of subhaloes is…
The distribution of satellite galaxies: the great pancake
- N. Libeskind, C. Frenk, C. Power
- Physics
- 18 March 2005
The 11 known satellite galaxies within 250 kpc of the Milky Way lie close to a great circle on the sky. We use high-resolution N-body simulations of galactic dark matter haloes to test if this…
A kinematic classification of the cosmic web
- Y. Hoffman, Ofer Metuki, A. Knebe
- Physics
- 16 January 2012
A new approach for the classification of the cosmic web is presented. In extension of the previous work of Hahn et al. and Forero-Romero et al., the new algorithm is based on the analysis of the…
TWO PLANES OF SATELLITES IN THE CENTAURUS A GROUP
- R. Tully, N. Libeskind, I. Karachentsev, V. Karachentseva, L. Rizzi, E. Shaya
- Physics
- 18 March 2015
Tip of the red giant branch measurements based on Hubble Space Telescope and ground-based imaging have resulted in accurate distances to 29 galaxies in the nearby Centaurus A Group. All but 2 of the…
How common is the Milky Way-satellite system alignment?
- N. Libeskind, C. Frenk, S. Cole, A. Jenkins, J. Helly
- Physics
- 11 May 2009
The highly flattened distribution of satellite galaxies in the Milky Way (MW) presents a number of puzzles. First, its polar alignment stands out from the planar alignments commonly found in other…
Tracing the cosmic web
- N. Libeskind, R. Weygaert, G. Yepes
- Physics
- 8 May 2017
The cosmic web is one of the most striking features of the distribution of galaxies and dark matter on the largest scales in the Universe. It is composed of dense regions packed full of galaxies,…
GALAXY SPIN ALIGNMENT IN FILAMENTS AND SHEETS: OBSERVATIONAL EVIDENCE
- E. Tempel, N. Libeskind
- Physics
- 13 August 2013
The properties of galaxies are known to be affected by their environment. One important question is how their angular momentum reflects the surrounding cosmic web. We use the Sloan Digital Sky Survey…
COSMIC VORTICITY AND THE ORIGIN HALO SPINS
- N. Libeskind, Y. Hoffman, M. Steinmetz, S. Gottloeber, A. Knebe, S. Hess
- Physics
- 6 December 2012
In the standard model of cosmology, structure emerges out of a non-rotational flow and the angular momentum of collapsing halos is induced by tidal torques. The growth of angular momentum in the…
The impact of baryonic physics on the shape and radial alignment of substructures in cosmological dark matter haloes
- A. Knebe, N. Libeskind, S. Knollmann, G. Yepes, S. Gottloeber, Y. Hoffman
- Physics
- 15 February 2010
We use two simulations performed within the Constrained Local UniversE Simulation (CLUES) project to study both the shape and radial alignment of (the dark matter component of) subhaloes; one of the…
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