![]() Stellar populations from SED modeling with secure Lyα emission and redshifts. Physical properties of spectroscopically confirmed galaxies at z ≥ 6. Kiloparsec-scale gaseous clumps and star formation at z = 5–7. The assembly of ‘normal’ galaxies at z ~ 7 probed by ALMA. He ii emitters in the VIMOS VLT Deep Survey: Population III star formation or peculiar stellar populations in galaxies at 2 < z < 4.6? Astron. Nuclear activity versus star formation: emission-line diagnostics at ultraviolet and optical wavelengths. Exploring He ii λ1640 emission line properties at z ~ 2–4. Ultraviolet emission lines in young low-mass galaxies at z ~ 2: physical properties and implications for studies at z > 7. Testing metallicity indicators at z ~ 1.4 with the gravitationally lensed galaxy CASSOWARY 20. The ultraviolet spectrum of the gravitationally lensed galaxy ‘the Cosmic Horseshoe’: a close-up of a star-forming galaxy at z ~ 2. The VIMOS Ultra-Deep Survey: evidence for AGN feedback in galaxies with C iii]-λ1908 Å emission 10.8 to 12.5 Gyr ago. The VIMOS Ultra Deep Survey: nature, ISM properties, and ionizing spectra of C iii] λ1909 emitters at z = 2–4. Massive star formation in a gravitationally lensed H ii galaxy at z = 3.357. Spectroscopic constraints on UV metal line emission at z ≃ 6–9: the nature of Lyα emitting galaxies in the reionization era. Spectroscopic detections of C iii] λ1909 Å at z ≃ 6–7: a new probe of early star-forming galaxies and cosmic reionization. MOSFIRE, the Multi-Object Spectrometer For Infra-Red Exploration at the Keck Observatory. The onset of star formation 250 million years after the Big Bang. Dust in the reionization era: ALMA observations of a z = 8.38 gravitationally lensed galaxy. First results from the Faint Infrared Grism Survey (FIGS): first simultaneous detection of Lyα emission and Lyman break from a galaxy at z = 7.51. A galaxy rapidly forming stars 700 million years after the Big Bang at redshift 7.51. The first systematic survey for Lyα emitters at z = 7.3 with red-sensitive Subaru/Suprime-Cam. The bright end of the z ~ 9 and z ~ 10 UV luminosity functions using all five CANDELS fields. A geometrically supported z ~ 10 candidate multiply imaged by the Hubble Frontier Fields Cluster A2744. The abundance of star-forming galaxies in the redshift range 8.5–12: new results from the 2012 Hubble ultra-deep field campaign. CLASH: three strongly lensed images of a candidate z ≈ 11 galaxy. A magnified young galaxy from about 500 million years after the Big Bang. A remarkably luminous galaxy at z = 11.1 measured with Hubble Space Telescope grism spectroscopy. The most luminous z ~ 9–10 galaxy candidates yet found: the luminosity function, cosmic star-formation rate, and the first mass density estimate at 500 Myr. ![]() Future facilities will be able to find the progenitors of such galaxies at higher redshift and probe the cosmic epoch at the beginning of reionization. GN-z11 is luminous and young, yet moderately massive, implying a rapid build-up of stellar mass in the past. Its ultraviolet lines probably originate from dense ionized gas that is rarely seen at low redshifts, and its strong and C iii] emission is partly due to an active galactic nucleus or enhanced carbon abundance. This is consistent with the redshift of the previous grism observations, supporting GN-z11 as the most distant galaxy known to date. Here we report a probable detection of three ultraviolet emission lines from GN-z11, which can be interpreted as the λ1907, C iii] λ1909 doublet and O iii] λ1666 at z = 10.957 ± 0.001 (when the Universe was only ~420 Myr old, or ~3% of its current age). However, its accurate redshift remained unclear. Follow-up Hubble Space Telescope near-infrared grism observations detected a continuum break that was explained as the Lyα break corresponding to \(z = 11.09_\) (ref. GN-z11 was photometrically selected as a luminous star-forming galaxy candidate at redshift z > 10 on the basis of Hubble Space Telescope imaging data 1.
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