EIGER I. a large sample of [OIII]-emitting galaxies at $5.3<z<6.9$ and direct evidence for local reionization by galaxies

Abstract

We present a first sample of 117 [OIII]$\lambda \lambda$4960,5008-selected star-forming galaxies at $5.33<z<6.93$ detected in JWST/NIRCam 3.5$\mu$m slitless spectroscopy of a $6.5\times 3.4$ arcmin${}^2$ field centered on the hyperluminous quasar SDSS J0100+2802, obtained as part of the EIGER (Emission-line galaxies and Intergalactic Gas in the Epoch of Reionization) survey. Three prominent galaxy overdensities are observed, one of them at the redshift of the quasar. Galaxies are found within 200 pkpc and 105 km s${}^{-1}$ of four known metal absorption-line systems in this redshift range. We focus on the role of the galaxies in ionizing the surrounding intergalactic medium (IGM) during the later stages of cosmic reionization and construct the mean Ly$\alpha$ and Ly$\beta$ transmission as a function of distance from the galaxies. At the lowest redshifts in our study, $5.3<z<5.7$, the IGM transmission rises monotonically with distance from the galaxies. This is as expected when galaxies reside at peaks in the overdensity field of an IGM that is ionized by more or less uniform ionizing background, and has been seen at lower redshifts. In contrast, at $5.7<z<6.14$, the transmission of both Ly$\alpha$ and Ly$\beta$ first increases with distance, but then peaks at a distance of 5 cMpc before declining. This peak in transmission is qualitatively similar to that seen (albeit at smaller distances and higher redshifts) in the THESAN simulations. Finally, in the region $6.15<z<6.26$ where the additional ionizing radiation from the quasar dominates, the monotonic increase in transmission with distance is re-established. This result is interpreted to represent evidence that the transmission of the IGM at $z\sim 5.9$ towards J0100+2802 results from the ``local'' ionizing radiation of galaxies that dominates over the much reduced cosmic background.

24 pages, 14 figures, submitted to ApJ, comments welcome

References in corpus (37)

• Array Programming with NumPy
• A luminous quasar at a redshift of z = 7.085
• The Circumgalactic Medium
• Cosmic Reionization and Early Star-Forming Galaxies: A Joint Analysis of New Constraints from Planck and Hubble Space Telescope
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• Model-independent evidence in favor of an end to reionization by z~6
• The Pan-STARRS1 distant z>5.6 quasar survey: more than 100 quasars within the first Gyr of the universe
• Pōniuā'ena: A Luminous $z=7.5$ Quasar Hosting a 1.5 Billion Solar Mass Black Hole
• Hydrogen reionisation ends by $z=5.3$: Lyman-$\alpha$ optical depth measured by the XQR-30 sample
• Introducing the THESAN project: radiation-magnetohydrodynamic simulations of the epoch of reionization
• Rapid Decline of Lyman-alpha Emission Toward the Reionization Era
• Cosmic Reionization On Computers I. Design and Calibration of Simulations
• Accelerated Evolution of Ly$\alpha$ Luminosity Function at $\text{z}\gtrsim 7$ Revealed by the Subaru Ultra-Deep Survey for Ly$\alpha$ Emitters at $\text{z}=7.3$
• The identification of z-dropouts in Pan-STARRS1: three quasars at 6.5<z<6.7
• EIGER II. first spectroscopic characterisation of the young stars and ionised gas associated with strong H$\beta$ and [OIII] line-emission in galaxies at z=5-7 with JWST
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• The THESAN project: properties of the intergalactic medium and its connection to Reionization-era galaxies
• A Census of the Bright z=8.5-11 Universe with the Hubble and Spitzer Space Telescopes in the CANDELS Fields
• The THESAN project: Lyman-alpha emission and transmission during the Epoch of Reionization
• JWST Noise Floor I: Random Error Sources in JWST NIRCam Time Series
• Long Dark Gaps in the Ly$\beta$ Forest at $z<6$: Evidence of Ultra Late Reionization from XQR-30 Spectra
• Chasing the Tail of Cosmic Reionization with Dark Gap Statistics in the Ly$\alpha$ Forest over $5<z<6$
• The Keck Baryonic Structure Survey: Using foreground/background galaxy pairs to trace the structure and kinematics of circumgalactic neutral hydrogen at $z\sim 2$
• A Lyman-α protocluster at redshift 6.9
• (Re)Solving Reionization with Lyα: How Bright Lyα Emitters account for the $z\approx 2-8$ Cosmic Ionizing Background
• A short mean free path at $z=6$ favors late and rapid reionization by faint galaxies
• Strong Ly$\alpha$ Emission in an Overdense Region at $z=6.8$: A Very Large ($R\sim 3$ physical Mpc) Ionized Bubble in COSMOS?
• Discovery of Eight z ~ 6 Quasars in the Sloan Digital Sky Survey Overlap Regions
• High Redshift Intergalactic C IV Abundance Measurements from the Near-Infrared Spectra of Two z~6 QSOs
• Early results from GLASS-JWST. II: NIRCam extra-galactic imaging and photometric catalog
• Constraints on the End of Reionization from the Density Fields Surrounding Two Highly Opaque Quasar Sightlines
• The evolution of the Si IV content in the Universe from the epoch of reionization to cosmic noon
• Constraining the Tail-End of Reionization Using Lyman-$\alpha$ Transmission Spikes
• A Deep Learning Approach to Quasar Continuum Prediction
• The physical origin for spatially large scatter of IGM opacity at the end of reionization: the IGM Ly$\alpha$ opacity-galaxy density relation
• Cosmological 3D HI Gas Map with HETDEX Ly$\alpha$ Emitters and eBOSS QSOs at $z=2$: IGM-Galaxy/QSO Connection and a $\sim$ 40-Mpc Scale Giant HII Bubble Candidate
• A [C II] 158$\mu$m Emitter Associated with an OI Absorber at the End of the Reionization Epoch

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