The Velocity Dispersion Function for Massive Quiescent and Star-Forming Galaxies at 0.6 $<$ z $\le$ 1.0

Abstract

We present the first direct spectroscopic measurement of the stellar velocity dispersion function (VDF) for massive quiescent and star-forming galaxies at $0.6<z\le 1.0$. For this analysis we use individual measurements of stellar velocity dispersion from high-S/N spectra from the public Large Early Galaxy Astrophysics Census (LEGA-C) survey. We report a remarkable stability of the VDF for both quiescent and star-forming galaxies within this redshift range, though we note the presence of weak evolution in the number densities of star-forming galaxies. We compare both VDFs with previous direct and inferred measurements at local and intermediate redshifts, with the caveat that previous measurements of the VDF for star-forming galaxies are poorly constrained at all epochs. We emphasize that this work is the first to directly push to low-stellar velocity dispersion (${\sigma }_{\star }>100$ km s${}^{-1}$) and extend to star-forming galaxies. We are largely consistent with the high-sigma tail measured from BOSS, and we find that the VDF remains constant from the median redshift of LEGA-C, $z\sim 0.8$, to the present day.

arXiv comment11 pages, 3 figures, accepted for publication in ApJ

References in corpus (50)

• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Detailed Structural Decomposition of Galaxy Images
• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• Detailed Decomposition of Galaxy Images. II. Beyond Axisymmetric Models
• First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• Revisiting the Scaling Relations of Black Hole Masses and Host Galaxy Properties
• UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
• The SAURON project - IV. The mass-to-light ratio, the virial mass estimator and the fundamental plane of elliptical and lenticular galaxies
• The Evolution of the Stellar Mass Functions of Star-Forming and Quiescent Galaxies to z = 4 from the COSMOS/UltraVISTA Survey
• Minor mergers and the size evolution of elliptical galaxies
• The Growth of Massive Galaxies Since z=2
• The COSMOS Survey: Hubble Space Telescope / Advanced Camera for Surveys (HST/ACS) Observations and Data Processing
• The Atlas3D project - XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass Plane
• Extragalactic Science, Cosmology and Galactic Archaeology with the Subaru Prime Focus Spectrograph (PFS)
• Structural Parameters of Galaxies in CANDELS
• The Relation Between Compact, Quiescent High Redshift Galaxies and Massive Nearby Elliptical Galaxies: Evidence for Hierarchical, Inside-Out Growth
• Structure and star formation in galaxies out to z=3: evidence for surface density dependent evolution and upsizing
• A Public Ks-selected Catalog in the COSMOS/UltraVISTA Field: Photometry, Photometric Redshifts and Stellar Population Parameters
• What turns galaxies off? The different morphologies of star-forming and quiescent galaxies since z~2 from CANDELS
• The velocity dispersion function of early-type galaxies
• Internal and Collective Properties of Galaxies in the Sloan Digital Sky Survey
• The VLT LEGA-C Spectroscopic Survey: The Physics of Galaxies at a Lookback Time of 7 Gyr
• Pixel-based correction for Charge Transfer Inefficiency in the Hubble Space Telescope Advanced Camera for Surveys
• The stellar mass function of star-forming galaxies and the mass-dependent SFR function since z=2.23 from HiZELS
• Galaxy luminosities, stellar masses, sizes, velocity dispersions as a function of morphological type
• Improved Cosmological Constraints from Gravitational Lens Statistics
• A massive, dead disk galaxy in the early Universe
• On the Masses of Galaxies in the Local Universe
• The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release II: dynamical and stellar population properties of z ~< 1 galaxies in the COSMOS field
• Redshift Evolution of the Galaxy Velocity Dispersion Function
• Resolving Quiescent Galaxies at $z\gtrsim 2$: II. Direct Measures of Rotational Support
• The Evolution of the M_BH-sigma relation Inferred from the Age Distribution of Local Early-Type Galaxies and AGN Evolution
• Spatially Resolved Stellar Kinematics from LEGA-C: Increased Rotational Support in z~0.8 Quiescent Galaxies
• A relation between characteristic stellar age of galaxies and their intrinsic shape
• The Velocity Dispersion Function of Very Massive Galaxy Clusters: Abell 2029 and Coma
• Evolution of Quiescent and Star-Forming Galaxies Since z~1.5 as a Function of Their Velocity Dispersions
• Velocity Dispersion, Size, Sérsic Index and $D_{n}4000$: The Scaling of Stellar Mass with Dynamical Mass for Quiescent Galaxies
• 1D Kinematics from stars and ionized gas at $z\sim 0.8$ from the LEGA-C spectroscopic survey of massive galaxies
• Galaxy evolution from strong lensing statistics: the differential evolution of the velocity dispersion function in concord with the LambdaCDM paradigm
• Stellar Velocity Dispersion: Linking Quiescent Galaxies to their Dark Matter Halos
• The velocity dispersion function of early-type galaxies and its redshift evolution: the newest results from lens redshift test
• Stellar Dynamical Models for 797 $z\sim 0.8$ Galaxies from LEGA-C
• The Velocity Dispersion Function for Quiescent Galaxies in the Local Universe
• A Direct Measurement of the High-Mass End of the Velocity Dispersion Function at $z\sim 0.55$ from SDSS-III/BOSS
• The Velocity Dispersion Function for Quiescent Galaxies in Nine Strong-Lensing Clusters
• The velocity function of dark matter halos at r=20 kpc: Remarkably little evolution since z ~ 4

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