Are rotating planes of satellite galaxies ubiquitous?

Abstract

We compare the dynamics of satellite galaxies in the Sloan Digital Sky Survey to simple models in order to test the hypothesis that a large fraction of satellites co-rotate in coherent planes. We confirm the previously-reported excess of co-rotating satellite pairs located near diametric opposition with respect to the host, but show that this signal is unlikely to be due to rotating discs (or planes) of satellites. In particular, no overabundance of co-rotating satellites pairs is observed within $\sim 20^{\circ }-50^{\circ }$ of direct opposition, as would be expected for planar distributions inclined relative to the line-of-sight. Instead, the excess co-rotation for satellite pairs within $\sim 10^{\circ }$ of opposition is consistent with random noise associated with undersampling of an underlying isotropic velocity distribution. We conclude that at most $10\%$ of the hosts in our sample harbor co-rotating satellite planes (as traced by the luminous satellite population).

10 pages, 7 figures

References in corpus (20)

• K-corrections and filter transformations in the ultraviolet, optical, and near infrared
• A Vast Thin Plane of Co-rotating Dwarf Galaxies Orbiting the Andromeda Galaxy
• The spatial distribution of the Milky Way and Andromeda satellite galaxies
• Co-orbiting satellite galaxy structures are still in conflict with the distribution of primordial dwarf galaxies
• The orbital poles of Milky Way satellite galaxies: a rotationally supported disc-of-satellites
• Two Planes of Satellites in the Centaurus A Group
• Planes of satellite galaxies and the cosmic web
• Velocity anti-correlation of diametrically opposed galaxy satellites in the low redshift universe
• Three Different Types of Galaxy Alignment within Dark Matter Halos
• A thousand shadows of Andromeda: rotating planes of satellites in the Millennium-II cosmological simulation
• The alignment of satellite galaxies and cosmic filaments: observations and simulations
• Discs of Satellites: the new dwarf spheroidals
• Satellite Systems around Galaxies in Hydrodynamic Simulations
• The Alignment between Satellites and Central Galaxies: Theory vs. Observations
• Angular distribution of satellite galaxies from the Sloan Digital Sky Survey Data Release 4
• The Anisotropic Distribution of Satellite Galaxies
• A new spin on disks of satellite galaxies
• Evidence for Early Filamentary Accretion from the Andromeda Galaxy's Thin Plane of Satellites
• Eppur si muove: Positional and kinematic correlations of satellite pairs in the low Z universe
• Co-orbiting planes of sub-halos are similarly unlikely around paired and isolated hosts

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