Fast Rotators at Cosmic Noon: Stellar Kinematics for 15 Quiescent Galaxies from JWST-SUSPENSE

Abstract

We present spatially-resolved stellar kinematics of 15 massive ($M_{\ast }=10^{10.5-11.5}{M}_{\odot }$) quiescent galaxies at $z\sim 1.2-2.3$ from the JWST-SUSPENSE program. This is the largest sample of spatially-resolved kinematic measurements of quiescent galaxies at cosmic noon to date. Our measurements are derived from ultra-deep NIRSpec/MSA stellar absorption line spectra, using a forward modelling approach that accounts for optics, source morphology, positioning, and data reduction effects. 10 out of 15 galaxies are orientated such that we can measure rotational support. Remarkably, all 10 galaxies show significant rotation ($V_{r_e}=117-345$km/s, ${\sigma }_0=180-387$km/s), and are classified as "fast rotators" from their spin parameter. The remaining galaxies are too misaligned with respect to the slit to constrain their rotational velocities. The widespread rotational support in our sample indicates that the process responsible for quenching star formation in early massive galaxies did not destroy rotating disc structures. When combined with other quiescent galaxy samples at $z\sim 0.5-2.5$, we find a trend between rotational support and age, with younger quiescent galaxies being more rotationally supported. This age trend has also been found at $z\sim 0$, and likely explains why our high-redshift galaxies show more rotational support compared to massive ETGs at $z\sim 0$, which are, on average, older. Our kinematic modelling also enables us to calculate dynamical masses. These dynamical masses greatly exceed the stellar masses for our sample (median $M_{\text{dyn}}/M_{\ast }=2.7$); they even allow for the bottom-heavy IMF found in the cores of low-$z$ massive ellipticals. Altogether, our results support a scenario in which distant quiescent galaxies evolve into nearby massive ETGs, gradually building up their outskirts and simultaneously losing rotation, due to a series of (mostly minor) mergers.

Accepted in A&A; 15 pages, 10 figures (excluding appendices)

References in corpus (52)

• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• The SAURON project -- IX. A kinematic classification for early-type galaxies
• Stellar Population Inference with Prospector
• A systematic variation of the stellar initial mass function in early-type galaxies
• The KMOS^3D Survey: design, first results, and the evolution of galaxy kinematics from 0.7<z<2.7
• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: II. Formation of Red Ellipticals
• Multiple minor mergers: formation of elliptical galaxies and constraints for the growth of spiral disks
• Full spectrum fitting with photometry in pPXF: stellar population versus dynamical masses, non-parametric star formation history and metallicity for 3200 LEGA-C galaxies at redshift z~0.8
• The Majority of Compact Massive Galaxies at z~2 are Disk Dominated
• The MASSIVE Survey - I. A Volume-Limited Integral-Field Spectroscopic Study of the Most Massive Early-Type Galaxies within 108 Mpc
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope II. Multi-object spectroscopy (MOS)
• The role of mergers and halo spin in shaping galaxy morphology
• The SAMI Galaxy Survey: Revisiting Galaxy Classification Through High-Order Stellar Kinematics
• Dynamical properties of z $\sim 4.5$ dusty star-forming galaxies and their connection with local early type galaxies
• The KMOS^3D Survey: data release and final survey paper
• A Cold, Massive, Rotating Disk Galaxy 1.5 Billion Years after the Big Bang
• A massive, dead disk galaxy in the early Universe
• The SAMI Galaxy Survey: the third and final data release
• The ultra-dense, interacting environment of a dual AGN at z $\sim$ 3.3 revealed by JWST/NIRSpec IFS
• The MASSIVE Survey - V. Spatially-Resolved Stellar Angular Momentum, Velocity Dispersion, and Higher Moments of the 41 Most Massive Local Early-Type Galaxies
• MOSFIRE Spectroscopy of Quiescent Galaxies at 1.5 < z < 2.5. I - Evolution of Structural and Dynamical Properties
• Timing the formation and assembly of early-type galaxies via spatially resolved stellar populations analysis
• Fast rotating and low-turbulence discs at $z\simeq 4.5$: Dynamical evidence of their evolution into local early-type galaxies
• Star Formation Shut Down by Multiphase Gas Outflow in a Galaxy at a Redshift of 2.45
• The Bulge-Disk Decomposed Evolution of Massive Galaxies at 1<z<3 in CANDELS
• Half-mass radii of quiescent and star-forming galaxies evolve slowly from 0 < z < 2.5: implications for galaxy assembly histories
• JWST Reveals Widespread AGN-Driven Neutral Gas Outflows in Massive z ~ 2 Galaxies
• Morphologies and Color Gradients of Luminous Evolved Galaxies at z~1.5
• The Advanced Camera for Surveys General Catalog: Structural Parameters for Approximately Half a Million Galaxies
• Dissecting the size-mass and ${\Sigma }_1$-mass relations at 1.0 < z < 2.5: galaxy mass profiles and color gradients as a function of spectral shape
• ALMA measures rapidly depleted molecular gas reservoirs in massive quiescent galaxies at z~1.5
• The mass, colour, and structural evolution of today's massive galaxies since z~5
• The massive relic galaxy NGC 1277 is dark matter deficient. From dynamical models of integral-field stellar kinematics out to five effective radii
• Color gradients along the quiescent galaxy sequence: clues to quenching and structural growth
• The diverse nature and formation paths of slow rotator galaxies in the EAGLE simulations
• ALMA hints at the presence of turbulent disk galaxies at z > 5
• The Mass Scale of High-Redshift Galaxies: Virial Mass Estimates Calibrated with Stellar Dynamical Models from LEGA-C
• Resolved Multi-element Stellar Chemical Abundances in the Brightest Quiescent Galaxy at z $\sim$ 2
• The Diverse Molecular Gas Content of Massive Galaxies Undergoing Quenching at z~1
• Shape Evolution of Massive Early-Type Galaxies: Confirmation of Increased Disk Prevalence at z>1
• The kinematics of massive quiescent galaxies at $1.4<z<2.1$: dark matter fractions, IMF variation, and the relation to local early-type galaxies
• MAGAZ3NE: High Stellar Velocity Dispersions for Ultra-Massive Quiescent Galaxies at $z\gtrsim 3$
• Stellar Dynamical Models for 797 $z\sim 0.8$ Galaxies from LEGA-C
• Kinematics and Mass Distributions for Non-Spherical Deprojected Sérsic Density Profiles and Applications to Multi-Component Galactic Systems
• The SAMI Galaxy Survey: galaxy spin is more strongly correlated with stellar population age than mass or environment
• The supermassive black hole merger driven evolution of high-redshift red nuggets into present-day cored early-type galaxies
• Age and metal gradients in massive quiescent galaxies at $0.6\lesssim z\lesssim 1.0$: implications for quenching and assembly histories
• Ages and metallicities of quiescent galaxies: confronting broadband ($UVJ$) colours with stellar absorption lines
• LEGA-C: analysis of dynamical masses from ionized gas and stellar kinematics at z~0.8
• INSPIRE: INvestigating Stellar Populations In RElics. IX. KiDS J0842+0059: the first fully confirmed relic beyond the local Universe

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• When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66
• Feeding the Dead: Neutral Gas Inflow in a Long-Quenched Ancient Massive Galaxy at $z\sim 2.7$ Observed with JWST/NIRSpec
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