The first detection of ultra-diffuse galaxies in the Hydra I cluster from VEGAS survey

Abstract

In this paper we report on the discovery of 27 low-surface brightness galaxies, of which 12 are candidate ultra-diffuse galaxy (UDG) in the Hydra I cluster, based on deep observations taken as part of the VST Early-type Galaxy Survey (VEGAS). This first sample of UDG candidates in the Hydra I cluster represents an important step in our project that aims to enlarge the number of confirmed UDGs and, through study of statistically relevant samples, constrain the nature and formation of UDGs. This study presents the main properties of this class of galaxies in the Hydra I cluster. For all UDGs, we analyse the light and colour distribution, and provide a census of the globular cluster (GC) systems around them. Given the limitations of a reliable GC selection based on two relatively close optical bands only, we find that half of the UDG candidates have a total GC population consistent with zero. Of the other half, two galaxies have a total population larger than zero at 2$\sigma$ level. We estimate the stellar mass, the total number of GCs and the GC specific frequency ($S_N$). Most of the candidates span a range of stellar masses of $10^7-10^8$~M${}_{\odot }$. Based on the GC population of these newly discovered UDGs, we conclude that most of these galaxies have a standard or low dark matter content, with a halo mass of $\le 10^{10}$~M${}_{\odot }$.

arXiv commentAccepted for publication in A&A

References in corpus (71)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• Star counts in the Galaxy. Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
• NIHAO XI: Formation of Ultra-Diffuse Galaxies by outflows
• Ultra-diffuse galaxies: the high-spin tail of the abundant dwarf galaxy population
• A High Stellar Velocity Dispersion and ~100 Globular Clusters for the Ultra Diffuse Galaxy Dragonfly 44
• The Galaxy-Halo Connection Over The Last 13.3 Gyrs
• (Almost) Dark Galaxies in the ALFALFA Survey: Isolated HI Bearing Ultra Diffuse Galaxies
• Galaxies at the extremes: Ultra-diffuse galaxies in the Virgo Cluster
• A second galaxy missing dark matter in the NGC1052 group
• An overmassive Dark Halo around an Ultra-diffuse Galaxy in the Virgo Cluster
• The Fornax Deep Survey with VST. I. The extended and diffuse stellar halo of NGC~1399 out to 192 kpc
• The Formation of Ultra Diffuse Galaxies in Cored Dark Matter Halos Through Tidal Stripping and Heating
• The ACS Fornax Cluster Survey. VIII. The Luminosity Function of Globular Clusters in Virgo and Fornax Early-Type Galaxies and its Use as a Distance Indicator
• New Colour-Mass to Light Relations: the role of the Asymptotic Giant Branch phase and of interstellar dust
• Still Missing Dark Matter: KCWI High-Resolution Stellar Kinematics of NGC1052-DF2
• Spatial distribution of ultra-diffuse galaxies within large-scale structures
• Extensive Globular Cluster Systems Associated with Ultra Diffuse Galaxies in the Coma Cluster
• The HST/ACS Coma Cluster Survey IV. Intergalactic Globular Clusters and the Massive Globular Cluster System at the Core of the Coma Galaxy Cluster
• A Universe of Ultra-Diffuse Galaxies: Theoretical Predictions from $\Lambda$CDM Simulations
• The Observational Mass Function of Nearby Galaxy Clusters
• The Formation of Ultra-Diffuse Galaxies in Clusters
• Spectroscopic Confirmation of the Existence of Large, Diffuse Galaxies in the Coma Cluster
• The Globular Cluster Systems of Ultra-Diffuse Galaxies in the Coma Cluster
• The abundance of ultra-diffuse galaxies from groups to clusters: UDGs are relatively more common in more massive haloes
• The globular cluster systems of 54 Coma ultra-diffuse galaxies: statistical constraints from HST data
• The quenching and survival of ultra-diffuse galaxies in the Coma cluster
• Globular clusters indicate ultra diffuse galaxies are dwarfs
• Spatially-resolved stellar kinematics of the ultra diffuse galaxy Dragonfly 44. I. Observations, kinematics, and cold dark matter halo fits
• A Rich Globular Cluster System in Dragonfly 17: Are Ultra-Diffuse Galaxies Pure Stellar Halos?
• Galaxy Luminosity Functions from Deep Spectroscopic Samples of Rich Clusters
• Globular cluster luminosity function as distance indicator
• High-Precision Dark Halo Virial Masses from Globular Cluster Numbers: Implications for Globular Cluster Formation and Galaxy Assembly
• VEGAS: A VST Early-type GAlaxy Survey. I. Presentation, wide-field surface photometry, and substructures in NGC 4472
• Origins of ultra-diffuse galaxies in the Coma cluster II. Constraints from their stellar populations
• Globular Clusters in Coma Cluster Ultra Diffuse Galaxies (UDGs): Evidence for Two Types of UDG?
• The ultra-diffuse galaxy NGC 1052-DF2 with MUSE: II. The population of DF2: stars, clusters and planetary nebulae
• The early-type dwarf galaxy population of the Hydra I cluster
• The Fornax Deep Survey (FDS) with VST. VI. Optical properties of the dwarf galaxies in the Fornax cluster
• Spectroscopic characterisation of the stellar content of ultra diffuse galaxies
• Observational Properties of Ultra-Diffuse Galaxies in the Field: Field-UDGs are Predominantly Blue and Starforming
• A tale of two tails and an off-centered envelope: diffuse light around the cD galaxy NGC 3311 in the Hydra I cluster
• Halo mass estimates from the Globular Cluster populations of 175 Low Surface Brightness Galaxies in the Fornax Cluster
• The Leo-I group: new dwarf galaxy and UDG candidates
• The SLUGGS Survey: The globular cluster systems of three early-type galaxies using wide-field imaging
• The Fornax Deep Survey with VST. V. Exploring the faintest regions of the bright early-type galaxies inside the virial radius
• Low Metallicities and Old Ages for Three Ultra-Diffuse Galaxies in the Coma Cluster
• A large population of ultra-compact dwarf galaxies in the Hydra I cluster
• Stellar population and the origin of intra-cluster stars around brightest cluster galaxies: the case of NGC 3311
• Extreme chemical abundance ratio suggesting an exotic origin for an ultra-diffuse galaxy
• VEGAS-SSS II: Comparing the globular cluster systems in NGC3115 and NGC1399 using VEGAS and FDS survey data
• Origins of ultra-diffuse galaxies in the Coma cluster - I. Constraints from velocity phase-space
• How large are the globular cluster systems of early-type galaxies and do they scale with galaxy halo properties?
• The unmixed kinematics and origins of diffuse stellar light in the core of the Hydra I cluster (Abell 1060)
• The Distribution of Ultra-Diffuse and Ultra-Compact Galaxies in the Frontier Fields
• Deep Imaging of the HCG 95 Field.I.Ultra-diffuse Galaxies
• Threshing in Action - The tidal disruption of a dwarf galaxy by the Hydra I Cluster
• An Ultra diffuse Galaxy in the NGC 5846 group from the VEGAS survey
• Detailed XMM-Newton Observation of the Cluster of Galaxies Abell 1060
• The Fornax Deep Survey with VST. IX. The catalog of sources in the FDS area, with an example study for globular clusters and background galaxies
• VEGAS: A VST Early-type GAlaxy Survey. III. Mapping the galaxy structure, interactions and intragroup light in the NGC 5018 group
• Inhomogeneity in the Hot Intracluster Medium of Abell 1060 Observed with Chandra
• Detection of a Large Population of Ultra Diffuse Galaxies in Massive Galaxy Clusters: Abell S1063 and Abell 2744
• Sloshing in its cD halo: MUSE kinematics of the central galaxy NGC 3311
• VEGAS: VST Early-type GAlaxy Survey. V. IC 1459 group: Mass assembly history in low density environments
• The Nature of Ultra-diffuse Galaxies in Distant Massive Galaxy Clusters: Abell 370 in the Hubble Frontier Fields
• The Hydra I cluster core - II. Kinematic complexity in a rising velocity dispersion profile around the cD galaxy NGC 3311
• Ultra Diffuse Galaxies in the IC1459 Group from the VEGAS Survey
• Scaling relations for globular cluster systems in early-type galaxies
• A VST and VISTA study of globular clusters in NGC253
• The virial mass distribution of ultra-diffuse galaxies in clusters and groups

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• KMTNet Nearby Galaxy Survey: Overview and a Survey Description
• Looking into the faintEst WIth MUSE (LEWIS): on the nature of ultra-diffuse galaxies in the Hydra I cluster. V. Integrated stellar population properties
• Evolution of globular-cluster systems of ultra-diffuse galaxies due to dynamical friction in MOND gravity
• Zangetsu: A Candidate of Isolated, Quiescent, and Backsplash Ultra-Diffuse Galaxy in the COSMOS Field
• The baryonic mass-size relation of galaxies. II. Implications for the evolutionary paths between star-forming and passive galaxies
• Using Deep Learning Methods to Detect for Ultra-diffuse Galaxies in KiDS
• Dark Galaxies in the A1367 Galaxy Cluster
• SHARP(ening the) view of unresolved globular clusters in ultra diffuse galaxies
• The influence of the Cosmic Web on the properties of dwarf galaxies in the Fornax-Eridanus Supercluster
• Evidence for Ultra-Diffuse Galaxy Formation Through Tidal Heating of Normal Dwarfs
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