The environments and hosts of metal absorption at z>5

Abstract

A growing population of metal absorbers are observed at z>5, many showing strong evolution in incidence approaching the epoch of hydrogen reionization. Follow-up surveys examining fields around these metals have resulted in galaxy detections but the direct physical relationship between the detected galaxies and absorbers is unclear. Upcoming observations will illuminate this galaxy-absorber relationship, but the theoretical framework for interpreting these observations is lacking. To inform future z>5 studies, we define the expected relationship between metals and galaxies using the Technicolor Dawn simulation to model metal absorption from z=5-7, encompassing the end of reionization. We find that metal absorber types and strengths are slightly better associated with their environment than with the traits of their host galaxies, as absorption system strengths are more strongly correlated with the local galaxy overdensity than the stellar mass of their host galaxy. For redshifts prior to the end of the epoch of reionization, strong high ionization transitions like C IV are more spatially correlated with brighter galaxies on scales of a few hundred proper kpc than are low ionization systems, due to the former's preference for environments with higher UVB amplitudes and those ions' relative rarity at z>6. Post-reionization, the galaxy counts near these high-ionization ions are reduced, and increase surrounding certain low-ionization ions due to a combination of their relative abundances and preferred denser gas phase. We conclude that galaxy-absorber relationships are expected to evolve rapidly such that high-ionization absorbers are better tracers of galaxies pre-reionization while low-ionization absorbers are better post-reionization.

arXiv commentAccepted to MNRAS

References in corpus (79)

• On the variation of the Initial Mass Function
• The cosmological simulation code GADGET-2
• The Global Schmidt Law in Star Forming Galaxies
• Cosmological SPH simulations: A hybrid multi-phase model for star formation
• Constraining the Evolution of the Ionizing Background and the Epoch of Reionization with z ~ 6 Quasars II: A Sample of 19 Quasars
• Cosmological Simulations with TreeSPH
• Nucleosynthesis Yields of Core-Collapse Supernovae and Hypernovae, and Galactic Chemical Evolution
• Gusty, gaseous flows of FIRE: galactic winds in cosmological simulations with explicit stellar feedback
• The COS-Halos Survey: Physical Conditions and Baryonic Mass in the Low-Redshift Circumgalactic Medium
• Mass, Metal, and Energy Feedback in Cosmological Simulations
• A General Class of Lagrangian Smoothed Particle Hydrodynamics Methods and Implications for Fluid Mixing Problems
• Evidence of patchy hydrogen reionization from an extreme Ly$\alpha$ trough below redshift six
• The radial and azimuthal profiles of Mg II absorption around 0.5 < z < 0.9 zCOSMOS galaxies of different colors, masses and environments
• Early Metal Enrichment of the Intergalactic Medium by Pregalactic Outflows
• The Evolution of the Galaxy Stellar Mass Function at z= 4-8: A Steepening Low-mass-end Slope with Increasing Redshift
• The spectral evolution of the first galaxies. I. James Webb Space Telescope detection limits and color criteria for population III galaxies
• An Empirical Characterization of Extended Cool Gas Around Galaxies Using MgII Absorption Features
• Hydrogen reionisation ends by $z=5.3$: Lyman-$\alpha$ optical depth measured by the XQR-30 sample
• The Minimum Universal Metal Density Between Redshifts of 1.5 and 5.5
• The COS-Dwarfs Survey: The Carbon Reservoir Around sub-L* Galaxies
• Figuring Out Gas & Galaxies in Enzo (FOGGIE). I. Resolving Simulated Circumgalactic Absorption at 2 < z < 2.5
• New constraints on Lyman-α opacity with a sample of 62 quasars at z > 5.7
• MAGIICAT II. General Characteristics of the MgII Absorbing Circumgalactic Medium
• Evolution of the galaxy stellar mass functions and UV luminosity functions at $z=6-9$ in the Hubble Frontier Fields
• The Opacity of the Intergalactic Medium Measured Along Quasar Sightlines at $z\sim 6$
• Mining Circumgalactic Baryons in the Low-Redshift Universe
• A downturn in intergalactic CIV as redshift 6 is approached
• Massive starburst galaxies in a z=2.16 proto-cluster unveiled by panoramic H-alpha mapping
• The Lyman-alpha luminosity function at z=5.7-6.6 and the steep drop of the faint end: implications for reionization
• A Deep Search For Faint Galaxies Associated With Very Low-redshift C IV Absorbers: III. The Mass- and Environment-dependent Circumgalactic Medium
• The THESAN project: Lyman-alpha emission and transmission during the Epoch of Reionization
• Metals in the IGM approaching the re-ionization epoch: results from X-shooter at the VLT
• The MUSE Hubble Ultra Deep Field Survey VI: The Faint-End of the Lya Luminosity Function at 2.91 < z < 6.64 and Implications for Reionisation
• Tracing the Reionization-Epoch Intergalactic Medium with Metal Absorption Lines
• MUSE Analysis of Gas around Galaxies (MAGG) -- II: Metal-enriched halo gas around z~1 galaxies
• The Impact of Starbursts on the Circumgalactic Medium
• The Evolution of O I over 3.2 < z < 6.5: Reionization of the Circumgalactic Medium
• Reionization in Technicolor
• A z=2.5 protocluster associated with the radio galaxy MRC 2104-242: star formation and differing mass functions in dense environments
• A Comprehensive Study of Ly$\alpha$ Emission in the High-redshift Galaxy Population
• Dissecting the Gaseous Halos of z~2 Damped Ly$\alpha$ Systems with Close Quasar Pairs
• Heavy Element Absorption Systems at $5.0<z<6.8$: Metal-Poor Neutral Gas and a Diminishing Signature of Highly Ionized Circumgalactic Matter
• The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5
• MAGIICAT VI. The MgII Intragroup Medium is Kinematically Complex
• Modelling the observed luminosity function and clustering evolution of Lyman-$\alpha$ emitters: growing evidence for late reionization
• Galaxies Probing Galaxies in PRIMUS - I. Sample, Spectroscopy, and Characteristics of the z~0.5 MgII-Absorbing Circumgalactic Medium
• Inference of the optical depth to reionization from low multipole temperature and polarisation Planck data
• Metal-enriched halo gas across galaxy overdensities over the last 10 billion years
• Testing the effect of galactic feedback on the IGM at z ~ 6 with metal-line absorbers
• The Soft, Fluctuating UVB at $z\sim 6$ as Traced by C IV, SiIV, and CII
• Metal-line emission from the warm-hot intergalactic medium: I. Soft X-rays
• Figuring Out Gas & Galaxies in Enzo (FOGGIE). II. Emission from the z=3 Circumgalactic Medium
• How robustly can we constrain the low-mass end of the $z\sim 6-7$ stellar mass function? -- The limits of lensing models and stellar population assumptions in the Hubble Frontier Fields
• Direct evidence for Ly$\alpha$ depletion in the protocluster core
• The role of galaxies and AGN in reionizing the IGM - II: metal-tracing the faint sources of reionization at $5\lesssim z\lesssim 6$
• The cold circumgalactic medium in emission: MgII halos in TNG50
• Faint end of the $z\sim 3-7$ luminosity function of Lyman-alpha emitters behind lensing clusters observed with MUSE
• Empirically Constrained Predictions for Metal-Line Emission from the Circumgalactic Medium
• The CGM and IGM at z$\sim$5: metal budget and physical connection
• Metal-line emission from the warm-hot intergalactic medium: II. Ultraviolet
• The origin of intergalactic metals around Lyman-break galaxies
• The evolution of the Si IV content in the Universe from the epoch of reionization to cosmic noon
• Crucial Factors for Lyα Transmission in the Reionizing Intergalactic Medium: Infall Motion, HII Bubble Size, and Self-shielded Systems
• The Geometry of Cold, Metal-Enriched Gas Around Galaxies at $z\sim 1.2$
• Evolution of CIV Absorbers I. The Cosmic Incidence
• The UV Luminosity Function of Protocluster Galaxies at $z\sim 4$: the Bright-end Excess and the Enhanced Star Formation Rate Density
• The Faint Host Galaxies of C IV Absorbers at z > 5
• Observable Signatures of the low-z Circum-Galactic and Inter-Galactic Medium : UV Line Emission in Simulations
• Large-scale environment of $z\sim 5.7$ CIV absorption systems -II. Spectroscopy of Lyman-$\alpha$ emitters
• Rest-frame UV line emission from the intergalactic medium at 2<z<5
• Cool circumgalactic gas in galaxy clusters: connecting the DESI legacy imaging survey and SDSS DR16 MgII absorbers
• Faint LAEs near z>4.7 CIV absorbers revealed by MUSE
• The warm-hot circumgalactic medium around EAGLE-simulation galaxies and its detection prospects with X-ray line emission
• Evolution of Neutral Oxygen During the Epoch of Reionization and its Use in Estimating the Neutral Hydrogen Fraction
• Aligned metal absorbers and the ultraviolet background at the end of reionization
• The COS-legacy survey of C IV absorbers: properties and origins of the intervening systems
• Probing the Metal Enrichment of the Intergalactic Medium at $z=5-6$ Using the Hubble Space Telescope
• A [C II] 158$\mu$m Emitter Associated with an OI Absorber at the End of the Reionization Epoch
• Theoretical study of an LAE-CIV absorption pair at z = 5.7

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• The clustering of C IV and Si IV at the end of reionisation: A perspective from the E-XQR-30 survey
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