The diverse evolutionary paths of simulated high-z massive, compact galaxies to z=0

Abstract

Massive quiescent galaxies have much smaller physical sizes at high redshift than today. The strong evolution of galaxy size may be caused by progenitor bias, major and minor mergers, adiabatic expansion, and/or renewed star formation, but it is difficult to test these theories observationally. Herein, we select a sample of 35 massive, compact galaxies ($M_{\ast }=1-3\times 10^{11}$ M${}_{\odot }$, $M_{\ast }/R^{1.5}>10^{10.5}$ M${}_{\odot }$/kpc${}^{1.5}$) at $z=2$ in the cosmological hydrodynamical simulation Illustris and trace them forward to $z=0$ to uncover their evolution and identify their descendants. By $z=0$, the original factor of 3 difference in stellar mass spreads to a factor of 20. The dark matter halo masses similarly spread from a factor of 5 to 40. The galaxies' evolutionary paths are diverse: about half acquire an ex-situ envelope and are the core of a more massive descendant, a third survive undisturbed and gain very little mass, 15% are consumed in a merger with a more massive galaxy, and a small remainder are thoroughly mixed by major mergers. The galaxies grow in size as well as mass, and only $\sim$10% remain compact by $z=0$. The majority of the size growth is driven by the acquisition of ex-situ mass. The most massive galaxies at $z=0$ are the most likely to have compact progenitors, but this trend possesses significant dispersion which precludes a direct linkage to compact galaxies at $z=2$. The compact galaxies' merger rates are influenced by their $z=2$ environments, so that isolated or satellite compact galaxies (which are protected from mergers) are the most likely to survive to the present day.

19 pages, 10 figures, MNRAS accepted version including 2 new figures

References in corpus (37)

• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• The hierarchical formation of the brightest cluster galaxies
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• Properties of galaxies reproduced by a hydrodynamic simulation
• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
• A unified model for AGN feedback in cosmological simulations of structure formation
• The merger rate of galaxies in the Illustris Simulation: a comparison with observations and semi-empirical models
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• The Illustris simulation: the evolving population of black holes across cosmic time
• Compaction and Quenching of High-z Galaxies in Cosmological Simulations: Blue and Red Nuggets
• The Illustris Simulation: Public Data Release
• Structure and star formation in galaxies out to z=3: evidence for surface density dependent evolution and upsizing
• Forming Compact Massive Galaxies
• The Formation of Massive, Compact Galaxies at z=2 in the Illustris Simulation
• The star formation main sequence and stellar mass assembly of galaxies in the Illustris simulation
• The dramatic size evolution of elliptical galaxies and the quasar feedback
• CANDELS+3D-HST: compact SFGs at z~2-3, the progenitors of the first quiescent galaxies
• Dynamical masses of early-type galaxies at z~2: Are they truly superdense?
• Stellar populations from spectroscopy of a large sample of quiescent galaxies at z > 1: Measuring the contribution of progenitor bias to early size growth
• Dissipation and Extra Light in Galactic Nuclei: III. 'Core' Ellipticals and 'Missing' Light
• Dense cores in galaxies out to z=2.5 in SDSS, UltraVISTA, and the five 3D-HST/CANDELS fields
• Synthetic Galaxy Images and Spectra from the Illustris Simulation
• Velocity Dispersions and Dynamical Masses for a Large Sample of Quiescent Galaxies at z > 1: Improved Measures of the Growth in Mass and Size
• The Progenitors of the Compact Early-Type Galaxies at High-Redshift
• Early formation of massive, compact, spheroidal galaxies with classical profiles by violent disc instability or mergers
• Keck-I MOSFIRE spectroscopy of compact star-forming galaxies at z$\gtrsim$2: High velocity dispersions in progenitors of compact quiescent galaxies
• A Massive Galaxy in its Core Formation Phase Three Billion Years After the Big Bang
• Massive relic galaxies challenge the co-evolution of SMBHs and their host galaxies
• Hiding in plain sight: An abundance of compact massive spheroids in the local Universe
• An analysis of the evolving comoving number density of galaxies in hydrodynamical simulations
• The Number Density of Quiescent Compact Galaxies at Intermediate Redshift
• Dozens of compact and high velocity-dispersion early-type galaxies in Sloan Digital Sky Survey
• A cosmological context for compact massive galaxies
• Evidence for (and Against) Progenitor Bias in the Size Growth of Compact Red Galaxies

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• The KMOS${}^{3D}$ Survey: rotating compact star forming galaxies and the decomposition of integrated line widths
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• Morphology Dependence Of Stellar Age in Quenched Galaxies at Redshift ~ 1.2: Massive Compact Galaxies Are Older Than More Extended Ones
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• INSPIRE: INvestigating Stellar Population In RElics -- I. Survey presentation and pilot program
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• The Evolutionary Pathways of Disk-, Bulge-, and Halo-dominated Galaxies
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