Deep Absorption Line Studies of Quiescent Galaxies at z~2: The Dynamical Mass-Size Relation, and First Constraints on the Fundamental plane

Abstract

We present dynamical and structural scaling relations of quiescent galaxies at z=2, including the dynamical mass-size relation and the first constraints on the fundamental plane (FP). The backbone of the analysis is a new, very deep VLT/X-shooter spectrum of a massive, compact, quiescent galaxy at z=2.0389. We detect the continuum between 3700-22000A and several strong absorption features (Balmer series, Ca H+K, G-band), from which we derive a stellar velocity dispersion of 318 +/- 53 km/s. We perform detailed modeling of the continuum emission and line indices and derive strong simultaneous constraints on the age, metallicity, and stellar mass. The galaxy is a dusty (A_V=0.77 (+0.36,-0.32)) solar metallicity (log(Z/Zsun) = 0.02 (+0.20,-0.41)) post starburst galaxy, with a mean luminosity weighted log(age/yr) of 8.9 +/- 0.1. The galaxy formed the majority of its stars at z>3 and currently has little or no ongoing star formation. We compile a sample of three other z~2 quiescent galaxies with measured velocity dispersions, two of which are also post starburst like. Their dynamical mass-size relation is offset significantly less than the stellar mass-size relation from the local early type relations, which we attribute to a lower central dark matter fraction. Recent cosmological merger simulations qualitatively agree with the data, but can not fully account for the evolution in the dark matter fraction. The z~2 FP requires additional evolution beyond passive stellar aging, to be in agreement with the local FP. The structural evolution predicted by the cosmological simulations is insufficient, suggesting that additional, possibly non-homologous structural evolution is needed.

Re-submitted to ApJ after implementing the comments of the referee

References in corpus (26)

• X-shooter, the new wide band intermediate resolution spectrograph at the ESO Very Large Telescope
• An ultra-deep near-infrared spectrum of a compact quiescent galaxy at z=2.2
• Structure and star formation in galaxies out to z=3: evidence for surface density dependent evolution and upsizing
• Can Minor Merging Account for the Size Growth of Quiescent Galaxies? New Results from the CANDELS Survey
• Ages and metallicities of early-type galaxies in the SDSS: new insight into the physical origin of the colour-magnitude and the Mg2-sigmaV relations
• The Majority of Compact Massive Galaxies at z~2 are Disk Dominated
• NICMOS Imaging of DRGs in the HDF-S: A Relation Between Star-Formation and Size at z ~ 2.5
• Superdense massive galaxies in the Nearby Universe
• Sizes and surface brightness profiles of quiescent galaxies at z ~ 2
• The stellar masses and specific star-formation rates of submillimetre galaxies
• Evidence for dark matter contraction and a Salpeter IMF in a massive early-type galaxy
• Dynamical masses of early-type galaxies at z~2: Are they truly superdense?
• Red Nuggets at High Redshift: Structural Evolution of Quiescent Galaxies Over 10 Gyr of Cosmic History
• The Star Formation Epoch of the Most Massive Early-Type Galaxies
• Dissipationless Mergers of Elliptical Galaxies and the Evolution of the Fundamental Plane
• Spectroscopic Confirmation Of An Extreme Starburst At Redshift 4.547
• The rest-frame optical luminosity functions of galaxies at 2<z<3.5
• The stellar velocity dispersion of a compact massive galaxy at z=1.80 using X-Shooter: confirmation of the evolution in the mass-size and mass-dispersion relations
• Fast evolving size of early-type galaxies at z>2 and the role of dissipationless (dry) merging
• The Pair Fraction of Massive Galaxies at 0 < z < 3
• Extragalactic Constraints on the Initial Mass Function
• A Confirmation of the Strong Clustering of Distant Red Galaxies at 2 < z <3
• Comparing dynamical and photometric-stellar masses of early-type galaxies at z ~ 1
• Young ages and other intriguing properties of massive compact galaxies in the Local Universe
• The influence of AGN nuclear parameters on the FRI/FRII dichotomy
• Structure of Protocluster Galaxies: Accelerated Structural Evolution in Overdense Environments?

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