Modeling the Connection Between Subhalos and Satellites in Milky Way-like Systems

Abstract

We develop a comprehensive and flexible model for the connection between satellite galaxies and dark matter subhalos in dark matter-only zoom-in simulations of Milky Way (MW)--mass host halos. We systematically identify the physical and numerical uncertainties in the galaxy--halo connection and simulations underlying our method, including (i) the influence of host halo properties; (ii) the relationship between satellite luminosities and subhalo properties, including the effects of reionization; (iii) the relationship between satellite and subhalo locations; (iv) the relationship between satellite sizes and subhalo properties, including the effects of tidal stripping; (v) satellite and subhalo disruption due to baryonic effects; and (vi) artificial subhalo disruption and orphan satellites. To illustrate our approach, we fit this model to the luminosity distribution of both classical MW satellites and those discovered in the Sloan Digital Sky Survey by performing realistic mock observations that depend on the luminosity, size, and distance of our predicted satellites, and we infer the total satellite population that will be probed by upcoming surveys. We argue that galaxy size and surface brightness modeling will play a key role in interpreting current and future observations, as the expected number of observable satellites depends sensitively on their surface brightness distribution.

arXiv comment21 pages, 10 figures. Updated to published version. Code available at https://github.com/eonadler/subhalo_satellite_connection

References in corpus (101)

• emcee: The MCMC Hammer
• The NumPy array: a structure for efficient numerical computation
• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• The Aquarius Project: the subhalos of galactic halos
• The observed properties of dwarf galaxies in and around the Local Group
• The Galaxy in Context: Structural, Kinematic and Integrated Properties
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation
• The Rockstar Phase-Space Temporal Halo Finder and the Velocity Offsets of Cluster Cores
• Too big to fail? The puzzling darkness of massive Milky Way subhaloes
• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• FIRE-2 Simulations: Physics versus Numerics in Galaxy Formation
• The Dark Energy Survey: more than dark energy - an overview
• Reionization and the abundance of galactic satellites
• The Connection between Galaxies and their Dark Matter Halos
• The Milky Way's bright satellites as an apparent failure of LCDM
• Accurate masses for dispersion-supported galaxies
• Reconciling dwarf galaxies with LCDM cosmology: Simulating a realistic population of satellites around a Milky Way-mass galaxy
• Gravitationally Consistent Halo Catalogs and Merger Trees for Precision Cosmology
• The tumultuous lives of galactic dwarfs and the missing satellites problem
• The APOSTLE simulations: solutions to the Local Group's cosmic puzzles
• Eight New Milky Way Companions Discovered in First-Year Dark Energy Survey Data
• Massloss of galaxies due to a UV-background
• Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
• Hydrodynamic Simulations of Galaxy Formation. II. Photoionization and the Formation of Low Mass Galaxies
• Can Photoionization Squelching Resolve the Sub-structure Crisis?
• Halo Substructure And The Power Spectrum
• Haloes gone MAD: The Halo-Finder Comparison Project
• Hundreds of Milky Way Satellites? Luminosity Bias in the Satellite Luminosity Function
• The Tidal Evolution of Local Group Dwarf Spheroidals
• The Connection between Galaxies and Dark Matter Structures in the Local Universe
• The Physics of Galaxy Clustering I: A Model for Subhalo Populations
• The Luminosity Function of the Milky Way Satellites
• Not so lumpy after all: modeling the depletion of dark matter subhalos by Milky Way-like galaxies
• The size - virial radius relation of galaxies
• Evolution of the Galaxy - Dark Matter Connection and the Assembly of Galaxies in Dark Matter Halos
• Baryons Matter: Why Luminous Satellite Galaxies Have Reduced Central Masses
• ELVIS: Exploring the Local Volume in Simulations
• Disruption of Dark Matter Substructure: Fact or Fiction?
• Dark Matter Substructure in Numerical Simulations: A Tale of Discreteness Noise, Runaway Instabilities, and Artificial Disruption
• The SAGA Survey: I. Satellite Galaxy Populations Around Eight Milky Way Analogs
• FIRE in the Field: Simulating the Threshold of Galaxy Formation
• A Baryonic Solution to the Missing Satellites Problem
• There is No Missing Satellites Problem
• A quantitative explanation of the observed population of Milky Way satellite galaxies
• There's no place like home? Statistics of Milky Way-mass dark matter halos
• Mass and shape of the Milky Way's dark matter halo with globular clusters from Gaia and Hubble
• Bent by baryons: the low mass galaxy-halo relation
• Luminosity function and radial distribution of Milky Way Satellites in a LCDM Universe
• Reproducing the Stellar Mass/Halo Mass Relation in Simulated LCDM Galaxies: Theory vs Observational Estimates
• Building Late-Type Spiral Galaxies by In-Situ and Ex-Situ Star Formation
• The Invisibles: A Detection Algorithm to Trace the Faintest Milky Way Satellites
• The upper bound on the lowest mass halo
• Sweating the small stuff: simulating dwarf galaxies, ultra-faint dwarf galaxies, and their own tiny satellites
• The chosen few: the low mass halos that host faint galaxies
• The mass of the Milky Way from satellite dynamics
• Modelling galaxy clustering in a high resolution simulation of structure formation
• Dark matter substructure and dwarf galactic satellites
• Constraining the WDM Particle Mass with Milky Way Satellites
• Galaxy evolution near groups and clusters: ejected satellites and the spatial extent of environmental quenching
• Gaia Proper Motions and Orbits of the Ultra-Faint Milky Way Satellites
• Organized Chaos: Scatter in the relation between stellar mass and halo mass in small galaxies
• The total satellite population of the Milky Way
• A unified model for the spatial and mass distribution of subhaloes
• The Concentration Dependence of the Galaxy-Halo Connection: Modeling Assembly Bias with Abundance Matching
• Mergers and Mass Accretion for Infalling Halos Both End Well Outside Cluster Virial Radii
• The escape speed curve of the Galaxy obtained from Gaia DR2 implies a heavy Milky Way
• The Caterpillar Project: A Large Suite of Milky Way Sized Halos
• Abundance of Field Galaxies
• The Dependence of Subhalo Abundance on Halo Concentration
• The Mass Distribution and Assembly of the Milky Way from the Properties of the Magellanic Clouds
• On the nature of the Milky Way satellites
• Too Many, Too Few, or Just Right? The Predicted Number and Distribution of Milky Way Dwarf Galaxies
• How cold is Dark Matter? Constraints from Milky Way Satellites
• The satellites of the Milky Way - Insights from semi-analytic modelling in a LambdaCDM cosmology
• The predicted luminous satellite populations around SMC and LMC-mass galaxies - A missing satellite problem around the LMC?
• Searches for New Milky Way Satellites from the First Two Years of Data of the Subaru/Hyper Suprime-Cam Survey: Discovery of Cetus~III
• Ultrafaint Dwarf Galaxies - the lowest mass relics from before reionization
• NIHAO X: Reconciling the local galaxy velocity function with Cold Dark Matter via mock HI observations
• Stealth Galaxies in the Halo of the Milky Way
• In Pursuit of the Least Luminous Galaxies
• No Assembly Required: Mergers are Mostly Irrelevant for the Growth of Low-mass Dwarf Galaxies
• Knowing the unknowns: uncertainties in simple estimators of galactic dynamical masses
• How to Reconcile the Observed Velocity Function of Galaxies with Theory
• Probing the Epoch of Reionization with Milky Way Satellites
• Modeling the Impact of Baryons on Subhalo Populations with Machine Learning
• Numerical resolution limits on subhalo abundance matching
• Unveiling the Milky Way: A New Technique for Determining the Optical Color and Luminosity of our Galaxy
• Dwarf Galaxy Formation with H2-Regulated Star Formation: II. Gas-Rich Dark Galaxies at Redshift 2.5
• An Improved Model for the Dynamical Evolution of Dark Matter Subhaloes
• On the stark difference in satellite distributions around the Milky Way and Andromeda
• Comprehensive Assessment of the Too-Big-to-Fail Problem
• A new astrophysical solution to the Too Big To Fail problem - Insights from the MoRIA simulations
• The Milky Way system in LCDM cosmological simulations
• nIFTy Cosmology: the clustering consistency of galaxy formation models
• The Massive Satellite Population of Milky-Way Sized Galaxies
• The connection between the host halo and the satellite galaxies of the Milky Way
• The abundance of satellite galaxies in the inner region of $\Lambda$CDM Milky Way sized haloes

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• ELVES III: Environmental Quenching by Milky Way-Mass Hosts
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• UniverseMachine: Predicting Galaxy Star Formation over Seven Decades of Halo Mass with Zoom-in Simulations
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