A Magnified Compact Galaxy at Redshift 9.51 with Strong Nebular Emission Lines

Abstract

Ultraviolet light from early galaxies is thought to have ionized gas in the intergalactic medium. However, there are few observational constraints on this epoch because of the faintness of those galaxies and the redshift of their optical light into the infrared. We report the observation, in JWST imaging, of a distant galaxy that is magnified by gravitational lensing. JWST spectroscopy of the galaxy, at rest-frame optical wavelengths, detects strong nebular emission lines that are attributable to oxygen and hydrogen. The measured redshift is z = 9.51 +- 0.01, corresponding to 510 million years after the Big Bang. The galaxy has a radius of 16.2+4.6-7.2 parsecs, which is substantially more compact than galaxies with equivalent luminosity at z = 6 to 8, leading to a high star formation rate surface density.

References in corpus (37)

• The Gaia mission
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• EAZY: A Fast, Public Photometric Redshift Code
• Stellar Population Inference with Prospector
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
• A population of red candidate massive galaxies ~600 Myr after the Big Bang
• Two Remarkably Luminous Galaxy Candidates at $z\approx 10-12$ Revealed by JWST
• A Long Time Ago in a Galaxy Far, Far Away: A Candidate z ~ 12 Galaxy in Early JWST CEERS Imaging
• Conditions for Reionizing the Universe with A Low Galaxy Ionizing Photon Escape Fraction
• Early results from GLASS-JWST. III: Galaxy candidates at z$\sim$9-15
• Stress Testing $\Lambda$CDM with High-redshift Galaxy Candidates
• Hubble Space Telescope Combined Strong and Weak Lensing Analysis of the CLASH Sample: Mass and Magnification Models and Systematic Uncertainties
• The chemical enrichment in the early Universe as probed by JWST via direct metallicity measurements at z~8
• Discovery and properties of ultra-high redshift galaxies ($9<z<12$) in the JWST ERO SMACS 0723 Field
• Revealing Galaxy Candidates out to $z\sim 16$ with JWST Observations of the Lensing Cluster SMACS0723
• The brightest galaxies at Cosmic Dawn
• AGN Emission Line Diagnostics and the Mass-Metallicity Relation up to Redshift z~2: the Impact of Selection Effects and Evolution
• lenstronomy II: A gravitational lensing software ecosystem
• The Low-Redshift Lyman Continuum Survey I: New, Diverse Local Lyman-Continuum Emitters
• First look with JWST spectroscopy: $z\sim 8$ galaxies resemble local analogues
• Deep U band and R imaging of GOODS-South: Observations,data reduction and first results
• CEERS Spectroscopic Confirmation of NIRCam-Selected z > 8 Galaxy Candidates with JWST/NIRSpec: Initial Characterization of their Properties
• Resolved spectroscopy of gravitationally lensed galaxies: global dynamics and star-forming clumps on ~100pc scales
• The Far-Ultraviolet Continuum Slope as a Lyman Continuum Escape Estimator at High-redshift
• A First Look at the Abundance Pattern -- O/H, C/O, and Ne/O -- in $z>7$ Galaxies with JWST/NIRSpec
• The Physical Conditions of Emission-Line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations
• Star formation at the smallest scales; A JWST study of the clump populations in SMACS0723
• First Batch of Candidate Galaxies at Redshifts 11 to 20 Revealed by the James Webb Space Telescope Early Release Observations
• UNCOVERing the extended strong lensing structures of Abell 2744 with the deepest JWST imaging
• A first look at the SMACS0723 JWST ERO: spectroscopic redshifts, stellar masses and star-formation histories
• Finding Peas in the Early Universe with JWST
• Evolution of the Mass-Metallicity Relation from Redshift $z\approx 8$ to the Local Universe
• Gaia Data Release 3: Cross-match of Gaia sources with variable objects from the literature
• Fast Calculation of Gravitational Lensing Properties of Elliptical Navarro-Frenk-White and Hernquist Density Profiles
• Sizes of Lensed Lower-luminosity z=4-8 Galaxies from the Hubble Frontier Field Program
• Low-redshift lowest-metallicity star-forming galaxies in the SDSS DR14
• Shapes and alignments of dark matter haloes and their brightest cluster galaxies in 39 strong lensing clusters

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• A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars
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• Spectroscopic Confirmation of CEERS NIRCam-selected Galaxies at $\mathbf{z}\simeq 8-10$
• JADES: Probing interstellar medium conditions at $z\sim 5.5-9.5$ with ultra-deep JWST/NIRSpec spectroscopy
• CEERS Spectroscopic Confirmation of NIRCam-Selected z > 8 Galaxy Candidates with JWST/NIRSpec: Initial Characterization of their Properties
• Life beyond 30: probing the -20<M_UV<-17 luminosity function at 8<z<13 with the NIRCam parallel field of the MIRI Deep Survey
• JWST UNCOVER: Extremely red and compact object at$z_{\mathrm{phot}}\simeq 7.6$ triply imaged by Abell 2744
• UNCOVERing the extended strong lensing structures of Abell 2744 with the deepest JWST imaging
• UNCOVER: Illuminating the Early Universe -- JWST/NIRSpec Confirmation of $z>12$ Galaxies
• A JWST/NIRSpec Exploration of the Connection between Ionization Parameter, Electron Density, and Star-Formation-Rate Surface Density in z=2.7-6.3 Galaxies
• The GLASS-JWST Early Release Science Program. III. Strong lensing model of Abell 2744 and its infalling regions
• Evolution of the Mass-Metallicity Relation from Redshift $z\approx 8$ to the Local Universe
• MIDIS: Strong (Hb + [OIII]) and Ha emitters at redshift $z\simeq 7-8$ unveiled with JWST/NIRCam and MIRI imaging in the Hubble eXtreme Deep Field (XDF)
• Deciphering Lyman-$\alpha$ Emission Deep into the Epoch of Reionisation
• Seven wonders of Cosmic Dawn: JWST confirms a high abundance of galaxies and AGNs at z $\simeq$ 9-11 in the GLASS field
• JWST/NIRSpec Measurements of the Relationships Between Nebular Emission-line Ratios and Stellar Mass at z~3-6
• A strong He II $\lambda$1640 emitter with extremely blue UV spectral slope at $z=8.16$: presence of Pop III stars?
• Insight into the Starburst Nature of Galaxy GN-z11 with JWST MIRI Spectroscopy
• Spatially-resolved H$\alpha$ and ionizing photon production efficiency in the lensed galaxy MACS1149-JD1 at a redshift of 9.11
• Catalogue of model star clusters in the Milky Way and M31 galaxies
• The COSMOS-Web ring: in-depth characterization of an Einstein ring lensing system at z~2
• Constraints on the early Universe star formation efficiency from galaxy clustering and halo modeling of H$\alpha$ and [O III] emitters
• The GLASS-JWST Early Release Science Program. IV. Data release of 263 spectra from 245 unique sources
• Witnessing an extreme, highly efficient galaxy formation mode with resolved Ly$\alpha$ and LyC emission
• Model-Independent Mass Reconstruction of the Hubble Frontier Field Clusters with MARS Based on Self-Consistent Strong Lensing Data
• Enhanced strong-lensing model of MACS~J0138.0$-$2155 based on new JWST and VLT/MUSE observations
• Ionizing Radiation Escape from Low-Redshift Galaxies and Its Connection to Cosmic Reionization
• Identification of Intermediate-mass Black Hole Candidates Among a Sample of Sd Galaxies
• JWST reveals extended stellar disks for ALMA-bright dusty star-forming galaxies in the Spiderweb protocluster
• Stringent constraint on the CCC+TL cosmology with $H(z)$ Measurements
• Extreme Emission-Line Galaxies in the MUSE Hubble Ultra Deep Field Survey
• Unraveling the Lyman Continuum Emission of Ion3: Insights from HST multi-band imaging and X-Shooter spectroscopy