Large Scale Structure in CHILES

Abstract

We demonstrate that the Discrete Persistent Source Extractor (DisPerSE) can be used with spectroscopic redshifts to define the cosmic web and its distance to galaxies in small area deepfields. Here we analyze the use of DisPerSE to identify structure in observational data. We apply DisPerSE to the distribution of galaxies in the COSMOS field and find the best parameters to identify filaments. We compile a catalog of 11500 spectroscopic redshifts from the Galaxy and Mass Assembly (GAMA) G10 data release. We analyze two-dimensional slices, extract filaments and calculate the distance for each galaxy to its nearest filament. We find that redder and more massive galaxies are closer to filaments. To study the growth of galaxies across cosmic time, and environment, we are carrying out an HI survey covering redshifts z = 0 - 0.45, the COSMOS HI Large Extragalactic Survey (CHILES). In addition we present the predicted HI mass fraction as a function of distance to filaments for the spectroscopically known galaxies in CHILES. Lastly, we discuss the cold gas morphology of a few individual galaxies and their positions with respect to the cosmic web. The identification of the cosmic web, and the ability of CHILES to study the resolved neutral hydrogen morphologies and kinematics of galaxies, will allow future studies of the properties of neutral hydrogen in different cosmic web environments across the redshift range z = 0.1 - 0.45.

Accepted for publication in the Astronomical Journal; 11 pages ; 8 figures

References in corpus (32)

• Stellar population synthesis at the resolution of 2003
• The Sloan Digital Sky Survey: Technical Summary
• The Optical and Near-Infrared Properties of Galaxies: I. Luminosity and Stellar Mass Functions
• The Cosmic Evolution Survey (COSMOS) -- Overview
• The COSMOS2015 Catalog: Exploring the 1<z<6 Universe with half a million galaxies
• Galaxy and Mass Assembly (GAMA): survey diagnostics and core data release
• The persistent cosmic web and its filamentary structure I: Theory and implementation
• The 6dF Galaxy Survey: Samples, Observational Techniques and the First Data Release
• The GALEX Arecibo SDSS Survey. I. Gas Fraction Scaling Relations of Massive Galaxies and First Data Release
• Tracing the cosmic web
• Detecting filamentary pattern in the cosmic web: a catalogue of filaments for the SDSS
• Galaxy evolution in the metric of the Cosmic Web
• COSMOS2015 photometric redshifts probe the impact of filaments on galaxy properties
• Large Structures and Galaxy Evolution in COSMOS at z < 1.1
• The Void Galaxy Survey: Optical Properties and H I Morphology and Kinematics
• The Cosmic Web: Geometric Analysis
• Detecting Effects of Filaments on Galaxy Properties in the Sloan Digital Sky Survey III
• Highest Redshift Image of Neutral Hydrogen in Emission: A CHILES Detection of a Starbursting Galaxy at z=0.376
• Galaxy And Mass Assembly (GAMA): Stellar mass growth of spiral galaxies in the cosmic web
• Cosmic Cartography of the Large-Scale Structure with Sloan Digital Sky Survey Data Release 6
• Galaxy And Mass Assembly (GAMA): Curation and reanalysis of 16.6k redshifts in the G10/COSMOS region
• A Pilot for a VLA HI Deep Field
• Evidence for HI replenishment in massive galaxies through gas accretion from the cosmic web
• The HI Content of Galaxies in Groups and Clusters as Measured by ALFALFA
• Evolution of cosmic filaments and of their galaxy population from MHD cosmological simulations
• The Void Galaxy Survey: Photometry, structure and identity of void galaxies
• The VIMOS Public Extragalactic Redshift Survey (VIPERS). The decline of cosmic star formation: quenching, mass, and environment connections
• Flaming, bright galaxies along the filaments of A2744
• Dark Matter Halo Properties vs. Local Density and Cosmic Web Location
• CHILES: HI morphology and galaxy environment at z=0.12 and z=0.17
• Morphological Segregation in the Surroundings of Cosmic Voids
• Can HI 21 cm line trace the Missing Baryons in the Filamentary Structures?

Cited by in corpus (20)

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• Virgo Filaments I: Processing of gas in cosmological filaments around the Virgo cluster
• Group connectivity in COSMOS: a tracer of mass assembly history
• CHILES VI: HI and H$\alpha$ Observations for z < 0.1 Galaxies; Probing HI Spin Alignment with Filaments in the Cosmic Web
• Do model emission line galaxies live in filaments at z~1?
• The effect of cosmic web filaments on galaxy evolution
• Study of galaxies on large-scale filaments in simulations
• Properties of Galaxies in Cosmic Filaments around the Virgo Cluster
• CHILES VERDES: Radio variability at an unprecedented depth and cadence in the COSMOS field
• MIGHTEE-HI: The relation between the HI gas in galaxies and the cosmic web
• Swarm Intelligence-based Extraction and Manifold Crawling Along the Large-Scale Structure
• Star-forming Dwarf Galaxies in Filamentary Structures around the Virgo Cluster: Probing Chemical Pre-processing in Filament Environments
• Connections between galaxy properties and halo formation time in the cosmic web
• HI Galaxy Signatures in the SARAO MeerKAT Galactic Plane Survey -- II. The Local Void and its substructure
• The four cosmic tidal web elements from the $\beta$-skeleton
• Galaxy and halo properties around cosmic filaments from Sloan Digital Sky Survey Data Release 7 and the ELUCID simulation
• Continuous Filament Network of the Local Universe
• Properties of the diffuse gas component in filaments detected in the Dianoga cosmological simulations
• Environmental history of filament galaxies: stellar mass assembly and star-formation of filament galaxies
• Virgo Filaments VI: H$\alpha$ clumps in the filaments around the Virgo galaxy cluster