Power Spectrum of Intrinsic Alignments of Galaxies in IllustrisTNG

Abstract

We present the 3-{\it dimensional} intrinsic alignment power spectra between the projected 2d galaxy shape/spin and the 3d tidal field across $0.1<k/h{\mathrm{Mpc}}^{-1}<60$ using cosmological hydrodynamical simulation, Illustris-TNG300, at redshifts ranging from $0.3$ to $2$. The shape-tidal field alignment increases with galaxy mass and the linear alignment coefficient $A_{\mathrm{IA}}$, defined with respect to the primordial tidal field, is found to have weak redshift dependence. We also show a promising detection of the shape/spin-tidal field alignments for stellar mass limited samples and a weak or almost null signal for star-forming galaxies for the TNG300 volume, $\sim 0.01(h^{-1}\mathrm{Gpc}{)}^3$. We further study the morphology and environmental dependence of the intrinsic alignment power spectra. The shape of massive disk- and spheroid-galaxies tend to align with the tidal field. The spin of low mass disks (and spheroids at low redshifts) tend to be parallel with the tidal field, while the spin of massive spheroids and disks tend to be perpendicular to tidal field. The shape and spin of massive centrals align with the tidal field at both small and large scales. Satellites show a radial alignment within the one-halo term region, and low mass satellites have an intriguing alignment signal in the two-halo term region. We also forecast a feasibility to measure the intrinsic alignment power spectrum for spectroscopic and imaging surveys such as Subaru HSC/PFS and DESI. Our results thus suggest that galaxy intrinsic alignment can be used as a promising tool for constraining the galaxy formation models.

arXiv commentaccepted for publication in JCAP, major change made after first version

References in corpus (82)

• Planck 2015 results. XIII. Cosmological parameters
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• Simulating Galaxy Formation with the IllustrisTNG Model
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
• GADGET: A code for collisionless and gasdynamical cosmological simulations
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Spectroscopic Target Selection for the Sloan Digital Sky Survey: The Luminous Red Galaxy Sample
• First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
• Dancing in the dark: galactic properties trace spin swings along the cosmic web
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
• A Method for Weak Lensing Observations
• Extragalactic Science, Cosmology and Galactic Archaeology with the Subaru Prime Focus Spectrograph (PFS)
• The history of star formation in a LCDM universe
• Evolution of structure in cold dark matter universes
• Shapes and Shears, Stars and Smears: Optimal Measurements for Weak Lensing
• Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
• Supermassive black holes and their feedback effects in the IllustrisTNG simulation
• Intrinsic and Extrinsic Galaxy Alignment
• Smoothed Particle Hydrodynamics in Astrophysics
• Cosmological parameters from lensing power spectrum and bispectrum tomography
• Simulations of magnetic fields in isolated disk galaxies
• Systematic errors in weak lensing: application to SDSS galaxy-galaxy weak lensing
• Spin induced galaxy alignments and their implications for weak lensing measurements
• Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
• Galaxy alignments: An overview
• Power Spectrum Super-Sample Covariance
• The Origin of Disks and Spheroids in Simulated Galaxies
• The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
• Connecting the cosmic web to the spin of dark halos: implications for galaxy formation
• Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample
• Evolution of the angular momentum of protogalaxies from tidal torques: Zel'dovich approximation
• Beyond linear galaxy alignments
• The role of mergers and halo spin in shaping galaxy morphology
• Intrinsic alignments of SDSS-III BOSS LOWZ sample galaxies
• Simultaneous measurement of cosmology and intrinsic alignments using joint cosmic shear and galaxy number density correlations
• Galaxy spin alignment in filaments and sheets: observational evidence
• Evidence for spin alignment of spiral and elliptical/S0 galaxies in filaments
• The WiggleZ Dark Energy Survey: Direct constraints on blue galaxy intrinsic alignments at intermediate redshifts
• Galaxy alignments: Theory, modelling and simulations
• A halo model for intrinsic alignments of galaxy ellipticities
• Tidal alignment of galaxies
• The alignment and shape of dark matter, stellar, and hot gas distributions in the EAGLE and cosmo-OWLS simulations
• The impact of intrinsic alignment on current and future cosmic shear surveys
• Combining perturbation theories with halo models
• Testing the tidal alignment model of galaxy intrinsic alignment
• Imprint of inflation on galaxy shape correlations
• Galaxy orientation with the cosmic web across cosmic time
• The halo model as a versatile tool to predict intrinsic alignments
• Galaxy Shapes and Intrinsic Alignments in The MassiveBlack-II Simulation
• Cosmic Shear Measurements with DES Science Verification Data
• Mergers drive spin swings along the cosmic web
• The SAMI Galaxy Survey: First detection of a transition in spin orientation with respect to cosmic filaments in the stellar kinematics of galaxies
• Cosmological Information in the Intrinsic Alignments of Luminous Red Galaxies
• An EFT description of galaxy intrinsic alignments
• Intrinsic galaxy shapes and alignments II: Modelling the intrinsic alignment contamination of weak lensing surveys
• Intrinsic alignments of galaxies in the MassiveBlack-II simulation: analysis of two-point statistics
• Separating intrinsic alignment and galaxy-galaxy lensing
• Intrinsic galaxy shapes and alignments I: Measuring and modelling COSMOS intrinsic galaxy ellipticities
• Spatial and kinematic alignments between central and satellite halos
• The build up of the correlation between halo spin and the large scale structure
• Galaxy-halo alignments in the Horizon-AGN cosmological hydrodynamical simulation
• A general explanation on the correlation of dark matter halo spin with the large scale environment
• Intrinsic alignments of BOSS LOWZ galaxies II: Impact of shape measurement methods
• Halo Shapes From Weak Lensing: The Impact of Galaxy--Halo Misalignment
• Galaxy shapes and alignments in the MassiveBlack-II hydrodynamic and dark matter-only simulations
• Intrinsic alignments of disk and elliptical galaxies in the MassiveBlack-II and Illustris simulations
• Spin flips I: Evolution of the angular momentum orientation of Milky Way-mass dark matter haloes
• The impact of baryonic physics on the shape and radial alignment of substructures in cosmological dark matter haloes
• The accretion of dark matter subhaloes within the cosmic web: primordial anisotropic distribution and its universality
• Improving geometric and dynamical constraints on cosmology with intrinsic alignments of galaxies
• Power spectrum of halo intrinsic alignments in simulations
• Detecting Galaxy-Filament Alignments in the Sloan Digital Sky Survey III
• Time evolution of intrinsic alignments of galaxies
• On the Intrinsic Alignments of the Late-Type Spiral Galaxies from the Sloan Digital Sky Survey Data Release 7
• Strong orientation dependence of surface mass density profiles of dark haloes at large scales
• Intrinsic Alignment in redMaPPer clusters -- II. Radial alignment of satellites toward cluster centers
• Comparison between the Blue and the Red Galaxy Alignments Detected in the Sloan Digital Sky Survey
• Can intrinsic alignments of elongated low-mass galaxies be used to map the cosmic web at high redshift?
• Measuring alignments between galaxies and the cosmic web at $z\sim 2-3$ using IGM tomography
• When galaxies align: intrinsic alignments of the progenitors of elliptical galaxies in the Horizon-AGN simulation

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• An Optimal Estimator of Intrinsic Alignments for Star-forming Galaxies in IllustrisTNG Simulation
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• Analysis method for 3D power spectrum of projected tensor field with fast estimator and window convolution modelling: an application to intrinsic alignments
• Evolution of central galaxy alignments in simulations
• Three-point intrinsic alignments of dark matter halos in the IllustrisTNG simulation
• Detection of the Mass-Dependent Dual-Type Transition of Galaxy Spins in IllustrisTNG Simulations
• Anisotropic correlation functions as tracers of central galaxy alignments in simulations
• A rising tide: Intrinsic alignments since the turn of the millennium
• Squeezing Full-Shape Dynamical Dark Energy Constraints with Galaxy Alignments
• Intrinsic alignments of the extended radio continuum emission of galaxies in the EAGLE simulations
• How the Galaxy Stellar Spins Acquire a Peculiar Tidal Connection?
• Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis
• Parity Violation in Galaxy Shapes: Primordial Non-Gaussianity
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