Velocity Dispersions of Massive Quiescent Galaxies from Weak Lensing and Spectroscopy

Abstract

We use MMT spectroscopy and deep Subaru Hyper Suprime-Cam (HSC) imaging to compare the spectroscopic central stellar velocity dispersion of quiescent galaxies with the effective dispersion of the dark matter halo derived from the stacked lensing signal. The spectroscopic survey (the Smithsonian Hectospec Lensing Survey) provides a sample of 4585 quiescent galaxy lenses with measured line-of-sight central stellar velocity dispersion (${\sigma }_{\mathrm{SHELS}}$) that is more than 85% complete for $R<20.6$, $D_{n}4000>1.5$ and $M_{\star }>10^{9.5}{\mathrm{M}}_{\odot }$. The median redshift of the sample of lenses is 0.32. We measure the stacked lensing signal from the HSC deep imaging. The central stellar velocity dispersion is directly proportional to the velocity dispersion derived from the lensing ${\sigma }_{\mathrm{Lens}}$, ${\sigma }_{\mathrm{Lens}}=(1.05\pm 0.15){\sigma }_{\mathrm{SHELS}}+(-21.17\pm 35.19)$. The independent spectroscopic and weak lensing velocity dispersions probe different scales, $\sim 3$kpc and $\gtrsim$ 100 kpc, respectively, and strongly indicate that the observable central stellar velocity dispersion for quiescent galaxies is a good proxy for the velocity dispersion of the dark matter halo. We thus demonstrate the power of combining high-quality imaging and spectroscopy to shed light on the connection between galaxies and their dark matter halos.

arXiv comment15 pages, 8 figures, Accepted for publication in The Astrophysical Journal

References in corpus (51)

• A Universal Density Profile from Hierarchical Clustering
• The Seventh Data Release of the Sloan Digital Sky Survey
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• Weak Gravitational Lensing
• Bayesian photometric redshift estimation
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Differential Galaxy Evolution in Cluster and Field Galaxies at z=0.3
• Modeling Luminosity-Dependent Galaxy Clustering Through Cosmic Time
• Galaxy halo masses and satellite fractions from galaxy-galaxy lensing in the SDSS: stellar mass, luminosity, morphology, and environment dependencies
• The Atlas3D project - XX. Mass-size and mass-sigma distributions of early-type galaxies: bulge fraction drives kinematics, mass-to-light ratio, molecular gas fraction and stellar initial mass function
• The Illustris Simulation: Public Data Release
• The Hyper Suprime-Cam Software Pipeline
• The Sloan Lens ACS Survey. IV: the mass density profile of early-type galaxies out to 100 effective radii
• MEASURING GALAXY MASSES USING GALAXY-GALAXY GRAVITATIONAL LENSING
• Shear calibration biases in weak lensing surveys
• Hectospec, the MMT's 300 Optical Fiber-Fed Spectrograph
• Properties of galaxy dark matter halos from weak lensing
• The Subaru/XMM-Newton Deep Survey (SXDS) - II. Optical Imaging and Photometric Catalogs
• The Galaxy-mass Correlation Function Measured from Weak Lensing in the SDSS
• Early-type galaxies in the SDSS. II. Correlations between observables
• The Non-Parametric Model for Linking Galaxy Luminosity with Halo/Subhalo Mass
• Density profiles of galaxy groups and clusters from SDSS galaxy-galaxy weak lensing
• The first-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
• Colors, magnitudes and velocity dispersions in early-type galaxies: Implications for galaxy ages and metallicities
• Weak Lensing with SDSS Commissioning Data: The Galaxy-Mass Correlation Function To 1/h Mpc
• Curvature in the scaling relations of early-type galaxies
• Combining cluster observables and stacked weak lensing to probe dark energy: Self-calibration of systematic uncertainties
• The luminosity and stellar mass Fundamental Plane of early-type galaxies
• Galaxy-Galaxy Lensing in the Hubble Deep Field: The Halo Tully-Fisher Relation at Intermediate Redshift
• The Red-sequence Cluster Survey-2 (RCS-2): survey details and photometric catalog construction
• Velocity Dispersions and Dynamical Masses for a Large Sample of Quiescent Galaxies at z > 1: Improved Measures of the Growth in Mass and Size
• Revealing velocity dispersion as the best indicator of a galaxy's color, compared to stellar mass, surface mass density or morphology
• On the Masses of Galaxies in the Local Universe
• The Deep Lens Survey
• A calibration of the stellar mass fundamental plane at z ~ 0.5 using the micro-lensing induced flux ratio anomalies of macro-lensed quasars
• The Scaling of Stellar Mass and Central Stellar Velocity Dispersion for Quiescent galaxies at z < 0.7
• Triggered Star Formation in Galaxy Pairs at z=0.08-0.38
• Weak Lensing Determination of the Mass in Galaxy Halos
• Lensing by galaxies in CNOC2 fields
• SHELS: The Hectospec Lensing Survey
• Connecting Dark Matter Halos with the Galaxy Center and the Supermassive Black Hole
• SHELS: A Complete Galaxy Redshift Survey with R$\le$20.6
• Stellar Velocity Dispersion: Linking Quiescent Galaxies to their Dark Matter Halos
• Quiescent Galaxy Size and Spectroscopic Evolution: Combining HSC Imaging and Hectospec Spectroscopy
• SHELS: Complete Redshift Surveys of Two Widely Separated Fields
• Improved Photometric Redshifts via Enhanced Estimates of System Response, Galaxy Templates, and Magnitude Priors
• Stellar mass versus velocity dispersion as tracer of the lensing signal around bulge-dominated galaxies
• The Differing Relationships Between Size, Mass, Metallicity and Core Velocity Dispersion of Central and Satellite Galaxies
• Reducing Systematic Error in Cluster Scale Weak Lensing
• A weak lensing view of the downsizing of star-forming galaxies

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• Fast, Slow, Early, Late: Quenching Massive Galaxies at z~0.8
• In pursuit of giants: II. Evolution of dusty quiescent galaxies over the last six billion years from the hCOSMOS survey
• The Velocity Dispersion Function for Quiescent Galaxies in Nine Strong-Lensing Clusters
• Tracing Dark Matter Halos with Satellite Kinematics and the Central Stellar Velocity Dispersion of Galaxies
• Velocity dispersion functions of pressure-supported galaxies in EAGLE simulations with varying active galactic nucleus feedback
• A MaNGA about the Legacy I: Connecting the Assembly of Stellar Halo with the Average Star Formation History in Low-Redshift Massive Galaxies
• Quiescent Galaxy Size, Velocity Dispersion, and Dynamical Mass Evolution