Central galaxy alignments. Dependence on the mass and the large-scale environment
arXiv:2503.13602 · doi:10.1051/0004-6361/202554593
Abstract
Observations indicate that central galaxies show a significant alignment of their main shape axes with other galaxies in their group, as well as with the large-scale structure of the universe. Simulations have corroborated this finding, providing further insights into how the shape of the stellar component aligns with the surrounding dark matter halo. In this work, we aim at gaining a deeper understanding of galaxy alignments by quantifying how this property is related to the mass of the haloes hosting central galaxies and to the large-scale environment measured at different scales. By studying different angles, we describe how the alignments of central galaxies depend on the mass of the haloes they inhabit. We explore how the main axes of central galaxies align across different scales, both in three-dimensional and two-dimensional projections. We examine how halo mass influences these alignments and how they vary in the surrounding large-scale environment. To conduct this study, we employ the TNG300 hydrodynamical simulations and compare our results with the spectroscopic data from the Sloan Digital Sky Survey Data Release 18. Three types of alignment were analysed: between stellar and dark matter components, between satellite galaxies and the central galaxy, and between the central galaxy and its host halo. The results show that the alignment increases with halo mass and varies with the environment (clusters, filaments, cluster periphery, and others). However, after controlling for local density, we found that most of the observed trends disappear, except for a marginal influence of cosmic filaments on some of the considered alignment angles. The SDSS observations confirm a mass dependence similar to the simulations, although observational biases limit the detection of differences between the different environments.
13 pages, 10 figures, Accepted to A&A
References in corpus (75)
- Planck 2015 results. XIII. Cosmological parameters
- Populating a cluster of galaxies - I. Results at z=0
- E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
- Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
- Simulating Galaxy Formation with the IllustrisTNG Model
- First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
- The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
- Properties of galaxies reproduced by a hydrodynamic simulation
- Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
- Substructures in hydrodynamical cluster simulations
- A Comprehensive Analysis of Uncertainties Affecting the Stellar Mass - Halo Mass Relation for 0<z<4
- The Dark Side of the Halo Occupation Distribution
- The Connection between Galaxies and their Dark Matter Halos
- Modeling Luminosity-Dependent Galaxy Clustering Through Cosmic Time
- The persistent cosmic web and its filamentary structure I: Theory and implementation
- Linking halo mass to galaxy luminosity
- A Halo-Based Galaxy Group Finder: Calibration and Application to the 2dFGRS
- Intrinsic and Extrinsic Galaxy Alignment
- New Relationships between Galaxy Properties and Host Halo Mass, and the Role of Feedbacks in Galaxy Formation
- Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
- Galaxy alignments: An overview
- The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
- The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
- The persistent cosmic web and its filamentary structure II: Illustrations
- The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys
- The Alignment between the Distribution of Satellites and the Orientation of their Central Galaxy
- Galaxy alignments: Observations and impact on cosmology
- Galaxy alignments: Theory, modelling and simulations
- The MillenniumTNG Project: The hydrodynamical full physics simulation and a first look at its galaxy clusters
- Quantifying the impact of mergers on the angular momentum of simulated galaxies
- Galaxy Groups in the SDSS-DR3
- The Planes of Satellite Galaxies Problem, Suggested Solutions, and Open Questions
- Planes of satellite galaxies and the cosmic web
- On determining the shape of matter distributions
- Angular momentum-Large-scale structure alignments in LCDM models and the SDSS
- Anisotropy in the distribution of satellites around primary galaxies in the 2dFGRS: the Holmberg effect
- The Cosmic Ballet II: Spin alignment of galaxies and haloes with large-scale filaments in the EAGLE simulation
- The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies
- KiDS+GAMA: Intrinsic alignment model constraints for current and future weak lensing cosmology
- Probing the Intrinsic Shape and Alignment of Dark Matter Haloes using SDSS Galaxy Groups
- Populations of filaments from the distribution of galaxies in numerical simulations
- Anisotropic Locations of Satellite Galaxies: Clues to the Orientations of Galaxies within their Dark Matter Halos
- First detection of stacked X-ray emission from cosmic web filaments
- Alignments of Galaxy Group Shapes with Large Scale Structure
- Characterising filaments in the SDSS volume from the galaxy distribution
- Density and temperature of cosmic-web filaments on scales of tens of megaparsecs
- SDSS-IV MaNGA: 3D spin alignment of spiral and S0 galaxies
- Like a spider in its web: a study of the Large Scale Structure around the Coma cluster
- Modeling Galactic Conformity with the Color-Halo Age Relation in the Illustris Simulation
- The Dark Energy Survey Year 3 and eBOSS: constraining galaxy intrinsic alignments across luminosity and colour space
- Cosmic Ballet III: halo spin evolution in the cosmic web
- Filament profiles from WISExSCOS galaxies as probes of the impact of environmental effects
- Caught in the rhythm: how satellites settle into a plane around their central galaxy
- Combining FOF and halo-based algorithms for the identification of galaxy groups
- The galaxy - dark matter halo connection: which galaxy properties are correlated with the host halo mass?
- The SAMI Galaxy Survey: flipping of the spin-filament alignment correlates most strongly with growth of the bulge
- Flows around galaxies. I. The dependency of galaxy connectivity on cosmic environments and effects on the star-formation rate
- The Fundamental Relation between Halo Mass and Galaxy Group Properties
- The galaxy size - halo mass scaling relations and clustering properties of central and satellite galaxies
- On the environmental influence of groups and clusters of galaxies beyond the virial radius: Galactic conformity at few Mpc scales
- Prospects for Recovering Galaxy Intrinsic Shapes from Projected Quantities
- Star-formation quenching of cluster galaxies as traced by metallicity, presence of active galactic nuclei, and galactic conformity
- Local and large-scale effects on the astrophysics of void-galaxies
- Galactic Conformity in both Star-formation and Morphological Properties
- How do galaxies populate halos in extreme density environments? An analysis of the Halo Occupation Distribution in SDSS
- Detection of anisotropic satellite quenching in galaxy clusters up to
- Evolution of central galaxy alignments in simulations
- Evidence for anisotropic quenching in massive galaxy clusters at
- Toward a Physical Understanding of Galaxy-Halo Alignment
- Mass Dependence of Galaxy-Halo Alignment in LOWZ and CMASS
- The Beyond-Halo Mass Effects of the Cosmic Web Environment on Galaxies
- On the weak lensing masses of a new sample of galaxy groups
- Galaxy shapes in Magneticum. I. Connecting stellar and dark matter shapes to dynamical and morphological galaxy properties and the large-scale structure
- Anisotropic correlation functions as tracers of central galaxy alignments in simulations
- Galaxy Alignments with Surrounding Structure in the Sloan Digital Sky Survey