Resolved star formation in TNG100 central and satellite galaxies

Abstract

Recent cosmological hydrodynamical simulations have produced populations of numerical galaxies whose global star-forming properties are in good agreement with those of observed galaxies. Proper modeling of energetic feedback from supernovae and active galactic nuclei is critical to the ability of simulations to reproduce observed galaxy properties and, historically, such modelling has proven to be a challenge. Here, we analyze local properties of central and satellite galaxies in the $z=0$ snapshot of the TNG100 simulation as a test of feedback models. We generate a face-on projection of stellar particles in TNG100 galaxies, from which we demonstrate the existence of a resolved star-forming main sequence (${\Sigma }_{SFR}$--${\Sigma }_{\ast }$ relation) with a slope and normalization that is in reasonable agreement with previous studies. We also present radial profiles of various galaxy populations for two parameters: the distance from the resolved main sequence line ($\Delta {\Sigma }_{SFR}$) and the luminosity-weighted stellar age ($ag{e}_L$). We find that, on average, high-mass central and satellite galaxies quench from the inside-out, while low-mass central and satellite galaxies have similar, flatter profiles.

References in corpus (53)

• Astropy: A Community Python Package for Astronomy
• Planck 2015 results. XIII. Cosmological parameters
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Star Formation in Galaxies Along the Hubble Sequence
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• The physical properties of star forming galaxies in the low redshift universe
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• 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
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• GADGET: A code for collisionless and gasdynamical cosmological simulations
• First results from the IllustrisTNG simulations: the galaxy color bimodality
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• The EAGLE simulations of galaxy formation: calibration of subgrid physics and model variations
• Properties of galaxies reproduced by a hydrodynamic simulation
• 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
• FIRE-2 Simulations: Physics versus Numerics in Galaxy Formation
• First results from the IllustrisTNG simulations: radio haloes and magnetic fields
• Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
• First Results from the TNG50 Simulation: Galactic outflows driven by supernovae and black hole feedback
• First Results from the TNG50 Simulation: The evolution of stellar and gaseous disks across cosmic time
• Theoretical Challenges in Galaxy Formation
• The Illustris Simulation: Public Data Release
• The optical morphologies of galaxies in the IllustrisTNG simulation: a comparison to Pan-STARRS observations
• Mass and Environment as Drivers of Galaxy Evolution II: The quenching of satellite galaxies as the origin of environmental effects
• An Objective Definition for the Main Sequence of Star-Forming Galaxies
• The Main Sequence of star-forming galaxies across cosmic times
• The Size Evolution of Star-forming and Quenched Galaxies in the IllustrisTNG simulation
• The star-formation activity of IllustrisTNG galaxies: main sequence, UVJ diagram, quenched fractions, and systematics
• The star formation main sequence and stellar mass assembly of galaxies in the Illustris simulation
• Spatially-Resolved Star Formation Main Sequence of Galaxies in the CALIFA Survey
• The star formation history of CALIFA galaxies: Radial structures
• Star formation along the Hubble sequence: Radial structure of the star formation of CALIFA galaxies
• Star formation is boosted (and quenched) from the inside out: radial star formation profiles from MaNGA
• How do central and satellite galaxies quench? -- Insights from spatially resolved spectroscopy in the MaNGA survey
• Are galactic star formation and quenching governed by local, global or environmental phenomena?
• Galaxy Structure as a Driver of the Star Formation Sequence Slope and Scatter
• The main sequence of star forming galaxies I. The local relation and its bending
• The SAMI Galaxy Survey: Spatially Resolving the Main Sequence of Star Formation
• Zooming in on major mergers: dense, starbursting gas in cosmological simulations
• The MUSE Atlas of Disks (MAD): Resolving Star Formation Rates and Gas Metallicities on < 100pc Scales
• Stochastic modeling of star-formation histories I: the scatter of the star-forming main sequence
• Impact of star formation history on the measurement of star formation rates
• Spatially Resolved Star Formation and Inside-out Quenching in the TNG50 Simulation and 3D-HST Observations
• SDSS-IV MaNGA: The Spatial Distribution of Star Formation and its Dependence on Mass, Structure and Environment
• Understanding the Scatter in the Spatially-resolved Star Formation Main Sequence of Local Massive Spiral Galaxies
• Resolved galaxy scaling relations in the EAGLE simulation: star formation, metallicity and stellar mass on kpc scales
• The sub-galactic and nuclear main sequences for local star-forming galaxies
• Elevation or Suppression? The Resolved Star Formation Main Sequence of Galaxies with Two Different Assembly Modes
• Variations in the slope of the resolved star-forming main sequence: a tool for constraining the mass of star-forming regions
• The evolution of radial gradients of MaNGA quiescent elliptical galaxies: inside-out quenching or outer mass growth?

Cited by in corpus (3)

• Intrinsic and Environmental Effects on the Distribution of Star Formation in TNG100 Galaxies
• Structural evolution of quiescent galaxies at intermediate redshifts at UV and red rest-frame wavelengths
• Measuring Scaling Relationships: Fitting Technique Matters