Beyond Ultra-diffuse Galaxies. II. Environmental Quenching of Mass-Size Outliers among the Satellites of Milky Way Analogs

Abstract

Recent observations have reignited interest in a population of dwarf galaxies that are large and diffuse for their mass, often called ultra-diffuse galaxies. However, the origin and evolution of these mass-size outliers and the role of the environment are still unclear. Using the exquisitely deep and wide Hyper Suprime-Cam Strategic Survey images, we search for ultra-puffy galaxies, defined as being $1.5\sigma$ larger than the average size for their mass, around Milky Way-like galaxies. We present the sizes and radial distributions of mass-size outliers and derive their quenched fraction to explore the impact of the environment. Surprisingly, despite being outliers in size, the ultra-puffy galaxies have a similar quenched fraction as normal-sized satellites of Milky Way analogs in both observations and simulations, suggesting that quenching is not tied to being a mass-size outlier. The quenched fraction is higher for the ultra-puffy galaxies associated with redder hosts, as well as those that are closer to the host in projection. In contrast, the ultra-diffuse galaxies are overall redder and more quiescent compared with normal satellites. We show that the classic definition of ultra-diffuse galaxies is heavily weighted toward quenched galaxies and thus cannot be used for a study of quenching of mass-size outliers.

arXiv comment13 pages, 6 figures, ApJ accepted. Key results are shown in Figures 4-6

References in corpus (89)

• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• Planck 2015 results. XIII. Cosmological parameters
• A Universal Density Profile from Hierarchical Clustering
• Galactic Stellar and Substellar Initial Mass Function
• Profiles of dark haloes: evolution, scatter, and environment
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• The Inner Structure of LambdaCDM Halos III: Universality and Asymptotic Slopes
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• A Comprehensive Analysis of Uncertainties Affecting the Stellar Mass - Halo Mass Relation for 0<z<4
• Cold dark matter haloes in the Planck era: evolution of structural parameters for Einasto and NFW profiles
• Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
• Reionization and the abundance of galactic satellites
• The Diversity and Similarity of Simulated Cold Dark Matter Halos
• Properties of Galaxy Groups in the SDSS: I.-- The Dependence of Colour, Star Formation, and Morphology on Halo Mass
• The tumultuous lives of galactic dwarfs and the missing satellites problem
• Improved background subtraction for the Sloan Digital Sky Survey images
• Forty-Seven Milky Way-Sized, Extremely Diffuse Galaxies in the Coma Cluster
• The redshift dependence of the structure of massive LCDM halos
• COLOSSUS: A python toolkit for cosmology, large-scale structure, and dark matter halos
• The optical morphologies of galaxies in the IllustrisTNG simulation: a comparison to Pan-STARRS observations
• The Effects of Photoionization on Galaxy Formation - I: Model and Results at z=0
• Can Photoionization Squelching Resolve the Sub-structure Crisis?
• A Stellar Mass Threshold for Quenching of Field Galaxies
• HI in Local Group Dwarf Galaxies and Stripping by the Galactic Halo
• The properties and luminosity function of extremely low luminosity galaxies
• Ram pressure stripping the hot gaseous halos of galaxies in groups and clusters
• Disruption of Dark Matter Substructure: Fact or Fiction?
• NIHAO XI: Formation of Ultra-Diffuse Galaxies by outflows
• An accurate physical model for halo concentrations
• Ultra-diffuse galaxies: the high-spin tail of the abundant dwarf galaxy population
• BUDHIES II: A phase-space view of HI gas stripping and star-formation quenching in cluster galaxies
• The SAGA Survey: I. Satellite Galaxy Populations Around Eight Milky Way Analogs
• Gas Stripping in Simulated Galaxies with a Multiphase ISM
• Quenching and ram pressure stripping of simulated Milky Way satellite galaxies
• Gas kinematics, morphology, and angular momentum in the FIRE simulations
• The SAGA Survey. II. Building a Statistical Sample of Satellite Systems around Milky Way-like Galaxies
• The origin of ultra diffuse galaxies: stellar feedback and quenching
• The abundance and spatial distribution of ultra-diffuse galaxies in nearby galaxy clusters
• The Formation of Ultra Diffuse Galaxies in Cored Dark Matter Halos Through Tidal Stripping and Heating
• The Number Density of Low Surface Brightness Galaxies with 23<mu_0<25 V-mag/sqr-arcsecond
• Illuminating Low-Surface-Brightness Galaxies with the Hyper Suprime-Cam Survey
• Ultra-faint dwarfs in a Milky Way context: Introducing the Mint Condition DC Justice League Simulations
• The Dearth of Neutral Hydrogen in Galactic Dwarf Spheroidal Galaxies
• Formation of ultra-diffuse galaxies in the field and in galaxy groups
• Satellite abundances around bright isolated galaxies
• NIHAO XV: The environmental impact of the host galaxy on galactic satellite and field dwarf galaxies
• The formation and evolution of low-surface-brightness galaxies
• Star formation histories of dwarf galaxies in the FIRE simulations: dependence on mass and Local Group environment
• A Universe of Ultra-Diffuse Galaxies: Theoretical Predictions from $\Lambda$CDM Simulations
• Rapid Environmental Quenching of Satellite Dwarf Galaxies in the Local Group
• A profile in FIRE: resolving the radial distributions of satellite galaxies in the Local Group with simulations
• The abundance of ultra-diffuse galaxies from groups to clusters: UDGs are relatively more common in more massive haloes
• Forward Modeling of Large-Scale Structure: An open-source approach with Halotools
• The Formation of Ultra-Diffuse Galaxies in the RomulusC Galaxy Cluster Simulation
• The Next Generation Virgo Cluster Survey (NGVS). XXX. Ultra-Diffuse Galaxies and their Globular Cluster Systems
• Shadows in the Dark: Low-Surface-Brightness Galaxies Discovered in the Dark Energy Survey
• Under Pressure: Quenching Star Formation in Low-Mass Satellite Galaxies via Stripping
• The radial distribution of galaxies in groups and clusters
• The Formation of Isolated Ultra-Diffuse Galaxies in Romulus25
• ELVES I: Structures of Dwarf Satellites of MW-like Galaxies; Morphology, Scaling Relations, and Intrinsic Shapes
• The Abundance and Radial Distribution of Satellite Galaxies
• SCARLET: Source separation in multi-band images by Constrained Matrix Factorization
• Satellite abundances around bright isolated galaxies II: radial distribution and environmental effects
• Satellite Galaxies and Fossil Groups in the Millennium Simulation
• Ultra-diffuse galaxies in the Auriga simulations
• Gas Loss by Ram Pressure Stripping and Internal Feedback From Low Mass Milky Way Satellites
• ELVES II: GCs and Nuclear Star Clusters of Dwarf Galaxies; The Importance of Environment
• Quiescent Ultra-diffuse galaxies in the field originating from backsplash orbits
• Quenching timescales of dwarf satellites around Milky Way-mass hosts
• The cumulative star-formation histories of dwarf galaxies with TNG50. I: Environment-driven diversity and connection to quenching
• WALLABY Pilot Survey: the diversity of ram pressure stripping of the galactic HI gas in the Hydra Cluster
• Radial Distributions of Dwarf Satellite Systems in the Local Volume
• Reviewing the frequency and central depletion of Ultra-Diffuse Galaxies in galaxy clusters from the KIWICS survey
• Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes). II. Expanded Survey Description and the Stripe 82 Catalog
• Figuring Out Gas & Galaxies In Enzo (FOGGIE). IV. The Stochasticity of Ram Pressure Stripping in Galactic Halos
• Satellites Around Milky Way Analogs: Tension in the Number and Fraction of Quiescent Satellites Seen in Observations Versus Simulations
• Observations of dark and luminous matter: the radial distribution of satellite galaxies around massive red galaxies
• Reaching for the Edge I: Probing the Outskirts of Massive Galaxies with HSC, DECaLS, SDSS, and Dragonfly
• Where are All the Gas-Bearing Local Dwarf Galaxies? Quantifying Possible Impacts of Reionization
• ELVES III: Environmental Quenching by Milky Way-Mass Hosts
• Ultra-Diffuse Galaxies as Extreme Star-forming Environments I: Mapping Star Formation in HI-Rich UDGs
• A Machine Learning Approach to Measuring the Quenched Fraction of Low-Mass Satellites Beyond the Local Group
• Colour and infall time distributions of satellite galaxies in simulated Milky-Way analogs
• Extending Ultra-Diffuse Galaxy Abundances to Milky Way Analogs
• The Quenched Satellite Population Around Milky Way Analogs
• HI Properties of Satellite Galaxies around Local Volume Hosts
• Census of Gaseous Satellites around Local Spiral Galaxies

Cited by in corpus (3)

• A new class of dark matter-free dwarf galaxies? I. Clues from FCC 224, NGC 1052-DF2 and NGC 1052-DF4
• Environmental Quenching of Low Surface Brightness Galaxies near Milky Way mass Hosts
• The ALMA View of High-Redshift Galaxy Formation