Unexpected dancing partners: Tracing the coherence between the spin and motion of dark matter halos

Abstract

A recent study conducted using CALIFA survey data (Lee et al, 2019b) has found that the orbital motions of neighbor galaxies are coherent with the spin direction of a target galaxy on scales of many Megaparsecs. We study this so called `large-scale coherence' phenomena using N-body cosmological simulations. We confirm a strong coherence signal within 1 Mpc/h of a target galaxy, reaching out to 6 Mpc/h. We divide the simulation halos into subsamples based on mass, spin, merger history and local halo number density for both target and neighbor halos. We find a clear dependency on the mass of the target halo only. Another key parameter was the local number density of both target and neighbor halos, with high density regions such as clusters and groups providing the strongest coherence signals, rather than filaments or lower density regions. However we do not find a clear dependency on halo spin or time since last major merger. The most striking result we find is that the signal can be detected up to~15Mpc/h from massive halos. These result provide valuable lessons for how observational studies could more clearly detect coherence, and we discuss the implications of our results for the origins of large-scale coherence.

arXiv comment15 pages, 14 figures, 1 table, accepted to ApJ on the June 5, 2022

References in corpus (53)

• The Sloan Digital Sky Survey: Technical Summary
• Efficient Computation of CMB anisotropies in closed FRW models
• The 2dF Galaxy Redshift Survey: Spectra and redshifts
• The Optical and Near-Infrared Properties of Galaxies: I. Luminosity and Stellar Mass Functions
• The 3D power spectrum of galaxies from the SDSS
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• GADGET: A code for collisionless and gasdynamical cosmological simulations
• The Rockstar Phase-Space Temporal Halo Finder and the Velocity Offsets of Cluster Cores
• CALIFA, the Calar Alto Legacy Integral Field Area survey: I. Survey presentation
• The Atlas3D project -- I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria
• The SAURON project - IV. The mass-to-light ratio, the virial mass estimator and the fundamental plane of elliptical and lenticular galaxies
• The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures
• A universal angular momentum profile for galactic halos
• Multi-scale initial conditions for cosmological simulations
• The SAURON project -- IX. A kinematic classification for early-type galaxies
• The ATLAS3D project - III. A census of the stellar angular momentum within the effective radius of early-type galaxies: unveiling the distribution of Fast and Slow Rotators
• The merger rate of galaxies in the Illustris Simulation: a comparison with observations and semi-empirical models
• The 2MASS Redshift Survey - Description and Data Release
• How do galaxies populate Dark Matter halos?
• The persistent cosmic web and its filamentary structure I: Theory and implementation
• The Average Mass-to-Light Profile of Galaxy Clusters
• The SAMI Galaxy Survey: instrument specification and target selection
• The ATLAS3D project - II. Morphologies, kinemetric features and alignment between photometric and kinematic axes of early-type galaxies
• The Updated Zwicky Catalog (UZC)
• Fingers of God
• A Map of the Universe
• Internal and External Alignment of the Shapes and Angular Momenta of LCDM Halos
• The origin and implications of dark matter anisotropic cosmic infall on ~L* haloes
• The Evolution of Dark Matter Halo Properties in Clusters, Filaments, Sheets and Voids
• Swirling around filaments: are large-scale structure vortices spinning up dark halos?
• Galaxy Clustering and Galaxy Bias in a Lambda-CDM Universe
• The alignment and shape of dark matter, stellar, and hot gas distributions in the EAGLE and cosmo-OWLS simulations
• SDSS IV MaNGA: The global and local stellar mass assemby histories of galaxies
• Angular momentum-Large-scale structure alignments in LCDM models and the SDSS
• The cosmic web and the orientation of angular momenta
• Galaxy orientation with the cosmic web across cosmic time
• The cosmic history of the spin of dark matter haloes within the large scale structure
• P-MaNGA: Emission Lines Properties - Gas Ionisation and Chemical Abundances from Prototype Observations
• The Hierarchical Nature of the Spin Alignment of Dark Matter Haloes in Filaments
• SDSS-IV MaNGA: stellar population gradients as a function of galaxy environment
• Cosmic vorticity and the origin of halo spins
• The impact of the connectivity of the cosmic web on the physical properties of galaxies at its nodes
• Intrinsic alignments of disk and elliptical galaxies in the MassiveBlack-II and Illustris simulations
• Possible observational evidence that cosmic filaments spin
• Optical Radii of Galaxy Clusters
• Group connectivity in COSMOS: a tracer of mass assembly history
• HectoMAP and Horizon Run 4: Dense Structures and Voids in the Real and Simulated Universe
• Observational detection of correlation between galaxy spins and initial conditions
• Mysterious Coherence in Several-Megaparsec Scales Between Galaxy Rotation and Neighbor Motion
• Intergalactic filaments spin
• Galaxy Rotation Coherent with the Motions of Neighbors: Discovery of Observational Evidence
• Dark Matter Halo Mergers I: Dependence on Environment & Redshift Evolution
• Living with Neighbors. III. Scrutinizing the Spin$-$Orbit Alignment of Interacting Dark Matter Halo Pairs

Cited by in corpus (4)

• Swarm Intelligence-based Extraction and Manifold Crawling Along the Large-Scale Structure
• New observational recipes for measuring dynamical state of galaxy clusters
• Towards an Observational Detection of Halo Spin Bias using Spin-Orbit Coherence
• Observational assessment of the viability of de Sitter-Gödel-de Sitter phase transition