Newcomers and suburbanites can drive the evolution of the size-stellar mass relation of early type galaxies in galaxy clusters

Abstract

At fixed stellar mass $M_{\ast }$, the effective radius $R_{\mathrm{e}}$ of massive satellite early-type galaxies (ETGs) in galaxy clusters is, on average, larger at lower redshift. We study theoretically this size evolution using the state-of-the-art cosmological simulation IllustrisTNG100: we sampled $75$ simulated satellite ETGs at redshift $z=0$ with $M_{\ast }\ge 10^{10.4}{M}_{\odot }$ belonging to the two most massive ($\approx 10^{14.6}{M}_{\odot }$) haloes of the simulation. We traced back in time the two clusters' main progenitors and we selected their satellite ETGs at $z>0$ with the same criterion adopted at $z=0$. The $R_{\mathrm{e}}-M_{\ast }$ relation of the simulated cluster satellite ETGs, which is robustly measured out to $z=0.85$, evolves similarly to the observed relation over the redshift range $0\lesssim z\lesssim 0.85$. In the simulation the main drivers of this evolution are the acquisition of new galaxies ("newcomers") by the clusters and the transformation of member galaxies located at large clustercentric distance ("suburbanites") at $z=0.85$, which end up being massive satellite ETGs at $z=0$. Though several physical processes contribute to change the population of satellite ETGs in the considered redshift interval, the shape of the stellar mass function of the simulated cluster ETGs is not significantly different at $z=0.85$ and at $z=0$, consistent with observations.

arXiv comment14 pages, 11 figures, resubmitted to MNRAS

References in corpus (63)

• Planck 2015 results. XIII. Cosmological parameters
• Stellar population synthesis at the resolution of 2003
• Galactic Stellar and Substellar Initial Mass Function
• Populating a cluster of galaxies - I. Results at z=0
• E pur si muove: Galiliean-invariant cosmological hydrodynamical simulations on a moving mesh
• Simulating Galaxy Formation with the IllustrisTNG Model
• First results from the IllustrisTNG simulations: matter and galaxy clustering
• First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies
• First results from the IllustrisTNG simulations: the galaxy color bimodality
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• First results from the IllustrisTNG simulations: A tale of two elements -- chemical evolution of magnesium and europium
• Simulating galaxy formation with black hole driven thermal and kinetic feedback
• First results from the IllustrisTNG simulations: radio haloes and magnetic fields
• Minor mergers and the size evolution of elliptical galaxies
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• Passively Evolving Early-type Galaxies at 1.4<z<2.5 in the Hubble Ultra Deep Field
• A New Non-Parametric Approach to Galaxy Morphological Classification
• The merger rate of galaxies in the Illustris Simulation: a comparison with observations and semi-empirical models
• The Sloan Lens ACS Survey. X. Stellar, Dynamical, and Total Mass Correlations of Massive Early-type Galaxies
• Can Minor Merging Account for the Size Growth of Quiescent Galaxies? New Results from the CANDELS Survey
• The optical morphologies of galaxies in the IllustrisTNG simulation: a comparison to Pan-STARRS observations
• The formation of disc galaxies in high resolution moving-mesh cosmological simulations
• Bulge Growth and Quenching since z = 2.5 in CANDELS/3D-HST
• The Size Evolution of Star-forming and Quenched Galaxies in the IllustrisTNG simulation
• Newly-quenched galaxies as the cause for the apparent evolution in average size of the population
• The Majority of Compact Massive Galaxies at z~2 are Disk Dominated
• Galactic Angular Momentum in the Illustris Simulation: Feedback and the Hubble Sequence
• Spectroscopic Confirmation of the Rich z=1.80 Galaxy Cluster JKCS 041 Using the WFC3 Grism: Environmental Trends in the Ages and Structure of Quiescent Galaxies
• Morphology and star formation in IllustrisTNG: the build-up of spheroids and discs
• Superdense Massive Galaxies in Wings Local Clusters
• Effect of environment on galaxies mass-size distribution: unveiling the transition from outside-in to inside-out evolution
• Near-Infrared Imaging of Early-Type Galaxies IV. The Physical Origins of the Fundamental Plane Scaling Relations
• Size and velocity-dispersion evolution of early-type galaxies in a Lambda cold dark matter universe
• JKCS041: a Coma cluster progenitor at z=1.803
• Cluster galaxies in XMMU J2235-2557: galaxy population properties in most massive environments at z~1.4
• The SAMI Galaxy Survey: comparing 3D spectroscopic observations with galaxies from cosmological hydrodynamical simulations
• Spot the difference. Impact of different selection criteria on observed properties of passive galaxies in zCOSMOS 20-k sample
• Disruption of satellite galaxies in simulated groups and clusters: the roles of accretion time, baryons, and pre-processing
• CANDELS Observations of the Environmental Dependence of the Color-Mass-Morphology Relation at z = 1.6
• The fate of disk galaxies in IllustrisTNG clusters
• The effect of the environment on the stellar mass - size relation of present-day galaxies
• On the occurrence of galaxy harassment
• HST/WFC3 grism observations of $z\sim 1$ clusters: The cluster vs. field stellar mass-size relation and evidence for size growth of quiescent galaxies from minor mergers
• Early-type galaxies at z~1.3. IV. Scaling relations in different environments
• Deep Luminosity Functions and Colour-Magnitude Relations for Cluster Galaxies at 0.2 < z < 0.6
• Massive Galaxies are Larger in Dense Environments: Environmental Dependence of Mass-Size Relation of Early-Type Galaxies
• The origin of the enhanced metallicity of satellite galaxies
• Tidal evolution of galaxies in the most massive cluster of IllustrisTNG-100
• The origin of compact galaxies with anomalously high black hole masses
• The scaling relation between richness and mass of galaxy clusters: a Bayesian approach
• Revisiting dynamical friction: the role of global modes and local wakes
• HST/WFC3 grism observations of $z\sim 1$ clusters: evidence for evolution in the mass-size relation of quiescent galaxies from poststarburst galaxies
• Size growth of red-sequence early-type galaxies in clusters in the last 10 Gyr
• Star formation and environment in clusters up to z~2.2
• The KMOS Cluster Survey (KCS) II - The Effect of Environment on the Structural Properties of Massive Cluster Galaxies at Redshift $1.39<z<1.61$
• Shrinking of Cluster Ellipticals: a Tidal Stripping explanation and Implications for the Intra-Cluster Light
• Quiescent galaxies in a virialized cluster at redshift 2: Evidence for accelerated size-growth
• Galaxies with monstrous black holes in galaxy cluster environments
• Thermodynamic evolution of the $z=1.75$ galaxy cluster IDCS J1426.5+3508
• The cosmic epoch dependence of environmental effects on size evolution of red-sequence early-type galaxies
• Merger-driven evolution of the effective stellar initial mass function of massive early-type galaxies
• The special growth history of central galaxies in groups and clusters
• Evidence for radially independent size growth of early-type galaxies in clusters

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