Velocity anti-correlation of diametrically opposed galaxy satellites in the low redshift universe

Abstract

Recent work has shown that both the Milky Way and the Andromeda galaxies possess the unexpected property that their dwarf satellite galaxies are aligned in thin and kinematically coherent planar structures. It is now important to evaluate the incidence of such planar structures in the larger galactic population, since the Local Group may not be a sufficiently representative environment. Here we report that the measurement of the velocity of pairs of diametrically opposed galaxy satellites provides a means to determine statistically the prevalence of kinematically coherent planar alignments. In the local universe (redshift $z<0.05$), we find that such satellite pairs out to a galactocentric distance of $150$ kpc are preferentially anti-correlated in their velocities (99.994% confidence level), and that the distribution of galaxies in the larger scale environment (beyond 150 kpc and up to $\approx 2$ Mpc) is strongly elongated along the axis joining the inner satellite pair ($>7\sigma$ confidence). Our finding may indicate that co-rotating planes of satellites, similar to that seen around the Andromeda galaxy, are ubiquitous in nature, while their coherent motion also suggests that they are a significant repository of angular momentum on $\sim 100$ kpc scales.

arXiv commentNature in press

References in corpus (31)

• A Universal Density Profile from Hierarchical Clustering
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Spectroscopic Target Selection in the Sloan Digital Sky Survey: The Main Galaxy Sample
• NYU-VAGC: a galaxy catalog based on new public surveys
• The Fourth Data Release of the Sloan Digital Sky Survey
• Resolving Cosmic Structure Formation with the Millennium-II Simulation
• Mass models of the Milky Way
• The remnants of galaxy formation from a panoramic survey of the region around M31
• A Vast Thin Plane of Co-rotating Dwarf Galaxies Orbiting the Andromeda Galaxy
• The great disk of Milky-Way satellites and cosmological sub-structures
• The VPOS: a vast polar structure of satellite galaxies, globular clusters and streams around the Milky Way
• Galaxy formation in WMAP1 and WMAP7 cosmologies
• The large-scale structure of the halo of the Andromeda Galaxy Part I: global stellar density, morphology and metallicity properties
• Masses for the Local Group and the Milky Way
• The spatial distribution of the Milky Way and Andromeda satellite galaxies
• Confirmation of Faint Dwarf Galaxies in the M81 Group
• A kinematic study of the Andromeda dwarf spheroidal system
• Dwarf Galaxy Planes: the discovery of symmetric structures in the Local Group
• A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (Part II); Distances to the Satellites of M31
• The rotationally stabilized VPOS and predicted proper motions of the Milky Way satellite galaxies
• The orbital poles of Milky Way satellite galaxies: a rotationally supported disc-of-satellites
• The SPLASH Survey: Spectroscopy of 15 M31 Dwarf Spheroidal Satellite Galaxies
• The Three-Dimensional Structure of the M31 Satellite System; Strong Evidence for an Inhomogeneous Distribution of Satellites
• The vast thin plane of M31 co-rotating dwarfs: an additional fossil signature of the M31 merger and of its considerable impact in the whole Local Group
• Dark Matter in the Milky Way's Dwarf Spheroidal Satellites
• A thousand shadows of Andromeda: rotating planes of satellites in the Millennium-II cosmological simulation
• Discs of Satellites: the new dwarf spheroidals
• The Formation of the Local Group Planes of Galaxies
• A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (Part I)
• A comparison of the distribution of satellite galaxies around Andromeda and the results of $\Lambda$CDM simulations
• Dwarfs walking in a row. The filamentary nature of the NGC3109 association

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• The alignment of SDSS satellites with the VPOS: effects of the survey footprint shape
• On the Stability of Satellite Planes I: Effects of Mass, Velocity, Halo Shape and Alignment
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• The satellite galaxy plane of NGC 4490 in light of ΛCDM - Sparsity of similarly extreme analogs and a possible role of satellite pairs
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