MUSEQuBES: The relation between Ly$\alpha$ emitters and C IV absorbers at $z\approx 3.3$

Abstract

We present a detailed study of the column density and covering fraction profiles of C IV absorption around 86 redshift $z\approx 3.3$ Ly$\alpha$ emitters (LAEs) detected in 8 Multi-Unit Spectroscopic Explorer (MUSE) fields of $1^{\prime }\times 1^{\prime }$ centered on 8 bright background quasars as part of the MUSEQuBES survey. Using Voigt profile fitting of all the C IV absorbers detected along these 8 sightlines, we generated a ``blind'' absorbers' catalog consisting of 489 C IV absorption components. We cross-matched this blind C IV catalog with the MUSE-detected LAE catalog and found a significant enhancement of C IV components within $\approx \pm$400 $\mathrm{km}{\mathrm{s}}^{-1}$ of the systemic redshifts of the LAEs. Neither the C IV column density ($N$) nor the Doppler parameter ($b$) of individual C IV components shows any significant anti-correlation with impact parameter ($\rho$) of the LAEs in the 68 percentile range of $90\le \rho \le 230$ physical kpc (pkpc). We find a covering fraction of $\approx 60\%$ for a threshold $N$(C IV) of $10^{12.5}\mathrm{c}{\mathrm{m}}^{-2}$, which is roughly twice as high as in random regions. The C IV covering fraction remains constant at $\approx 50\%$ for impact parameters in the range 150--250~pkpc ($\approx 3-6R_{200}$). Using the covering fraction profile, we constrained the LAE--C IV absorber two-point correlation function, and obtained $r_0=3.4$ comoving Mpc (cMpc) and $\gamma =1.2$ for a threshold $N$(C IV) of $10^{13.0}\mathrm{c}{\mathrm{m}}^{-2}$. The C IV covering fraction is found to be enhanced for the LAEs that are part of a ``pair/group'' compared to the isolated ones.

arXiv comment19 (+15 in the appendix) pages, 15 (+2 in the appendix) figures. Accepted for publication in MNRAS

References in corpus (67)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• Galactic Stellar and Substellar Initial Mass Function
• 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
• Cosmic Star Formation History
• Lyman Break Galaxies at z>4 and the Evolution of the UV Luminosity Density at High Redshift
• Galactic star formation and accretion histories from matching galaxies to dark matter haloes
• Some Aspects of Measurement Error in Linear Regression of Astronomical Data
• UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
• The Circumgalactic Medium
• The Structure and Kinematics of the Circum-Galactic Medium from Far-UV Spectra of z~2-3 Galaxies
• The COS-Halos Survey: Physical Conditions and Baryonic Mass in the Low-Redshift Circumgalactic Medium
• Galaxies and Intergalactic Matter at Redshift z~3: Overview
• 3D Lyman-alpha radiation transfer. I. Understanding Lyman-alpha line profile morphologies
• Metallicity of the intergalactic medium using pixel statistics. II. The distribution of metals as traced by C IV
• A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar
• The Gaseous Environment of High-z Galaxies: Precision Measurements of Neutral Hydrogen in the Circumgalactic Medium of z ~ 2-3 Galaxies in the Keck Baryonic Structure Survey
• A Budget and Accounting of Metals at z~0: Results from the COS-Halos Survey
• An Empirical Characterization of Extended Cool Gas Around Galaxies Using MgII Absorption Features
• Ubiquitous giant Ly $\alpha$ nebulae around the brightest quasars at $z\sim 3.5$ revealed with MUSE
• The Connection Between Galaxies and Intergalactic Absorption Lines at Redshift 2<z<3
• The Baryon Content of Cosmic Structures
• The Minimum Universal Metal Density Between Redshifts of 1.5 and 5.5
• The COS-Dwarfs Survey: The Carbon Reservoir Around sub-L* Galaxies
• The Keck Cosmic Web Imager Integral Field Spectrograph
• A statistical test for Nested Sampling algorithms
• Collaborative Nested Sampling: Big Data vs. complex physical models
• The Enrichment History of the Intergalactic Medium: Measuring the CIV/HI Ratio in the Lyman Alpha Forest
• The COS-Halos Survey: Origins of the Highly Ionized Circumgalactic Medium of Star-Forming Galaxies
• Metal-line absorption around $z\approx$2.4 star-forming galaxies in the Keck Baryonic Structure Survey
• The Origin of C IV Absorption Systems at Redshifts z<1---Discovery of Extended C IV Envelopes Around Galaxies
• MAGIICAT II. General Characteristics of the MgII Absorbing Circumgalactic Medium
• What is the physical origin of strong Lya emission? II. Gas Kinematics and Distribution of Lya Emitters
• Mining Circumgalactic Baryons in the Low-Redshift Universe
• Quasars Probing Quasars II: The Anisotropic Clustering of Optically Thick Absorbers around Quasars
• Recovering the systemic redshift of galaxies from their Lyman-alpha line profile
• The large and small scale properties of the intergalactic gas in the Slug Ly-alpha nebula revealed by MUSE HeII emission observations
• The Column Density, Kinematics, and Thermal State of Metal-Bearing Gas within the Virial Radius of z~2 Star-Forming Galaxies in the Keck Baryonic Structure Survey
• A Deep Search For Faint Galaxies Associated With Very Low-redshift C IV Absorbers: III. The Mass- and Environment-dependent Circumgalactic Medium
• The Impact of Starbursts on the Circumgalactic Medium
• Multiphase Gas In Galaxy Halos: The OVI Lyman-limit System toward J1009+0713
• The extent of chemically enriched gas around star-forming dwarf galaxies
• Neutral hydrogen optical depth near star-forming galaxies at z~2.4 in the Keck Baryonic Structure Survey
• An Extreme Metallicity, Large-Scale Outflow from a Star-Forming Galaxy at z ~ 0.4
• The rise of the C IV mass density at z<2.5
• MUSEQuBES: Calibrating the redshifts of Ly α emitters using stacked circumgalactic medium absorption profiles
• MusE GAs FLOw and Wind (MEGAFLOW) VIII. Discovery of a MgII emission halo probed by a quasar sightline
• CGM${}^2$ I: The Extent of the Circumgalactic Medium Traced by Neutral Hydrogen
• Galaxies Probing Galaxies in PRIMUS - I. Sample, Spectroscopy, and Characteristics of the z~0.5 MgII-Absorbing Circumgalactic Medium
• Metal-enriched halo gas across galaxy overdensities over the last 10 billion years
• MUSE Analysis of Gas around Galaxies (MAGG) -- IV: The gaseous environment of $z\sim$ 3-4 Lyman-alpha emitting galaxies
• MUSEQuBES: Characterizing the circumgalactic medium of redshift $\approx 3.3$ Ly$\alpha$ emitters
• A high resolution study of intergalactic O VI absorbers at z~2.3
• Spatially Resolved Metal Gas Clouds
• Metal line emission from galaxy haloes at z~1
• BlueMUSE: Project Overview and Science Cases
• The Observability of Metal Lines Associated with the Lyman-alpha Forest
• Understanding the strong intervening OVI absorber at z${}_{abs}$ ~0.93 towards PG1206+459
• MusE GAs Flow and Wind (MEGAFLOW) VI. A study of CIV and MgII absorbing gas surrounding [OII] emitting galaxies
• Directly tracing cool filamentary accretion over >100 kpc into the interstellar medium of a quasar host at z=1
• How identifying circumgalactic gas by line-of-sight velocity instead of the location in 3D space affects O VI measurements
• Catch Me if You Can: Biased Distribution of Ly$\alpha$-emitting Galaxies according to the Viewing Direction
• SILVERRUSH. XI. Intensity Mapping for Lya Emission Extending over $100-1000$ comoving kpc around $z\sim 2-7$ LAEs with Subaru HSC-SSP and CHORUS Data
• The MUSE-Wide survey: Three-dimensional clustering analysis of Lyman-$\alpha$ emitters at $3.3<z<6$
• Large-scale excess HI absorption around $z\approx 4$ galaxies detected in a background galaxy spectrum in the MUSE eXtremely Deep Field

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• Transverse clues on the kpc-scale structure of the circumgalactic medium as traced by C IV absorption
• The galaxy counterpart and environment of the dusty Damped Lyman-alpha Absorber at z=2.226 towards Q1218+0832
• MUSE Analysis of Gas around Galaxies (MAGG) -- VI. The cool and enriched gas environment of z$\gtrsim$3 Ly$\alpha$ emitters
• The Intrinsic Distribution of Lyman-$\alpha$ Halos
• The multiple coherence scales of C IV at cosmic noon
• MUSE-ALMA Haloes XIV: The ALMA Large Programme Data Release