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A recently quenched galaxy 700 million years after the Big Bang
Analysis of the JWST/NIRSpec spectrum of the recently observed Lyman-break galaxy JADES-GS+53.15508-27.80178 revealed a redshift of z = 7.3, a Balmer break and a complete absence of nebular emission lines, indicating that quenching occurred only 700 million years after the Big Bang.
- Tobias J. Looser
- , Francesco D’Eugenio
- & Jan Scholtz
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Most of the photons that reionized the Universe came from dwarf galaxies
An analysis of eight ultra-faint galaxies during the epoch of reionization with absolute magnitudes between −17 mag and −15 mag shows that most of the photons that reionized the Universe come from dwarf galaxies.
- Hakim Atek
- , Ivo Labbé
- & Katherine E. Whitaker
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Article
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A dynamical measure of the black hole mass in a quasar 11 billion years ago
Using the GRAVITY+ instrument, dynamical measurement of the black hole mass in a quasar at a redshift of 2.3 (11 billion years ago) shows how the relationship between galaxies and black holes evolves with time.
- R. Abuter
- , F. Allouche
- & G. Zins
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Article
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A small and vigorous black hole in the early Universe
An extensive analysis of the JWST-NIRSpec spectrum of GN-z11 shows a supermassive black hole of a few million solar masses in a galaxy 440 million years after the Big Bang.
- Roberto Maiolino
- , Jan Scholtz
- & Fengwu Sun
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Bipolar outflows out to 10 kpc for massive galaxies at redshift z ≈ 1
An ultra-deep MUSE image of the mean Mg II emission for a sample of galaxies at redshift z ≈ 1 suggests the presence of bipolar outflows on scales of 10 kpc or more.
- Yucheng Guo
- , Roland Bacon
- & Martin Wendt
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Article
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A Milky Way-like barred spiral galaxy at a redshift of 3
We report observations of ceers-2112 that show that this galaxy, at a redshift of 3, unexpectedly has a barred spiral structure.
- Luca Costantin
- , Pablo G. Pérez-González
- & L. Y. Aaron Yung
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Confirmation and refutation of very luminous galaxies in the early Universe
JWST spectroscopy confirms redshifts for two very luminous galaxies with z > 11, and also demonstrates that another candidate with suggested z ≈ 16 instead has z = 4.9.
- Pablo Arrabal Haro
- , Mark Dickinson
- & Jorge A. Zavala
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Carbonaceous dust grains seen in the first billion years of cosmic time
An (ultraviolet) dust attenuation feature at 2,175 Å, attributed to carbonaceous dust grains in the Milky Way and nearby galaxies, also exists in galaxies up to a redshift of 7.
- Joris Witstok
- , Irene Shivaei
- & Christopher N. A. Willmer
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Detection of stellar light from quasar host galaxies at redshifts above 6
Images and spectroscopy obtained by the JWST from two HSC-SSP quasars show massive, compact and disc-like galaxies, indicating that the relation between black holes and their host galaxies was in place less than a billion years after the Big Bang.
- Xuheng Ding
- , Masafusa Onoue
- & Jinyi Yang
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Spatial variations in aromatic hydrocarbon emission in a dust-rich galaxy
We present James Webb Space Telescope observations that detect the 3.3 μm polycyclic aromatic hydrocarbon feature in a galaxy observed less than 1.5 billion years after the Big Bang.
- Justin S. Spilker
- , Kedar A. Phadke
- & Katherine E. Whitaker
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The nature of an ultra-faint galaxy in the cosmic dark ages seen with JWST
The JWST, with the aid of gravitational lensing, confirms the extreme distance of an ultra-faint galaxy at a redshift of 9.79, showing it to have a luminosity typical of the sources responsible for cosmic reionization and highly compact and complex morphology.
- Guido Roberts-Borsani
- , Tommaso Treu
- & Rogier A. Windhorst
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A close quasar pair in a disk–disk galaxy merger at z = 2.17
The authors report multiwavelength observations of SDSS J0749 + 2255, hosted by massive compact disk-dominated galaxies, as a kpc-scale, dual-quasar system hosted by a galaxy merger at cosmic noon.
- Yu-Ching Chen
- , Xin Liu
- & Nadia Zakamska
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A population of red candidate massive galaxies ~600 Myr after the Big Bang
James Webb Space Telescope early release observations used to search for intrinsically red galaxies from the first 750 million years of cosmic history find six candidate massive galaxies, possibly including one of roughly 1011 solar masses.
- Ivo Labbé
- , Pieter van Dokkum
- & Bingjie Wang
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Turbulent cold flows gave birth to the first quasars
Rare, converging cold flows gave birth to the massive black holes that were the seeds of the first quasars.
- M. A. Latif
- , D. J. Whalen
- & T. E. Woods
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Resolving the H i in damped Lyman α systems that power star formation
Spectroscopy of a gravitationally lensed galaxy at a redshift of 2.7 with spatially resolved maps of two foreground damped Lyman α systems indicates a vast mass of neutral hydrogen gas, consistent with a star-forming region.
- Rongmon Bordoloi
- , John M. O’Meara
- & James D. Neill
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Suppression of black-hole growth by strong outflows at redshifts 5.8–6.6
A study reporting optical and near-infrared observations of quasars at redshifts 5.8–6.6 shows that about half have strong winds, up to 17% the speed of light, suppressing black-hole growth.
- M. Bischetti
- , C. Feruglio
- & F. Fiore
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A dusty compact object bridging galaxies and quasars at cosmic dawn
An unusual ultraviolet compact object associated with a dusty starburst has been observed at a redshift of about 7.2, with a luminosity that falls between that of quasars and galaxies, possibly in transition between the two.
- S. Fujimoto
- , G. B. Brammer
- & P. A. Oesch
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Article
| Open Access
A time-resolved picture of our Milky Way’s early formation history
A sample of approximately 250,000 subgiant stars enables an alternative view of the Milky Way’s assembly history, especially the early formation history of the old disk and halo.
- Maosheng Xiang
- & Hans-Walter Rix
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Article
| Open Access
Microwave background temperature at a redshift of 6.34 from H2O absorption
Measurement of the cosmic microwave background temperature using H2O absorption at a redshift of 6.34 is reported, the results of which were consistent with those from standard ΛCDM cosmology.
- Dominik A. Riechers
- , Axel Weiss
- & Roberto Neri
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Normal, dust-obscured galaxies in the epoch of reionization
Two serendipitously detected dust-obscured galaxies are reported at z = 6.7 and 7.4, with estimates that such galaxies provide an additional 10–25% contribution to the total star formation rate density at z > 6.
- Y. Fudamoto
- , P. A. Oesch
- & C. White
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Quenching of star formation from a lack of inflowing gas to galaxies
The authors report 1.3 mm observations of dust emission from strongly lensed galaxies where star formation is quenched, demonstrating that gas depletion is responsible for the cessation of star formation in some high-redshift galaxies.
- Katherine E. Whitaker
- , Christina C. Williams
- & Francesco Valentino
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r-Process elements from magnetorotational hypernovae
Observations of an extremely metal-poor star suggest that rapidly rotating massive stars with large magnetic fields were a source of r-process elements in the early Universe.
- D. Yong
- , C. Kobayashi
- & B. P. Schmidt
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The baryon density of the Universe from an improved rate of deuterium burning
High-precision cross-sections of the nuclear reaction that burns deuterium to create helium-3 are used to produce theoretical estimates of the primordial baryon density that are in agreement with recent astronomical observations.
- V. Mossa
- , K. Stöckel
- & S. Zavatarelli
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A cold, massive, rotating disk galaxy 1.5 billion years after the Big Bang
A massive rotating disk galaxy was formed a mere 1.5 billion years after the Big Bang, a surprisingly short time after the origin of the Universe.
- Marcel Neeleman
- , J. Xavier Prochaska
- & Marc Rafelski
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A dominant population of optically invisible massive galaxies in the early Universe
Submillimetre-wavelength observations reveal a sample of galaxies that have no detectable emission in the ultraviolet-to-near-infrared region, and are probably the progenitors of the largest present-day galaxies in clusters.
- T. Wang
- , C. Schreiber
- & W.-H. Wang
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Letter |
The gravitationally unstable gas disk of a starburst galaxy 12 billion years ago
The molecular gas in the inner kiloparsec of a submillimetre-bright galaxy is clumpy and gravitationally unstable, collapsing to form stars at a rate that will deplete the gas in about 100 million years.
- K. Tadaki
- , D. Iono
- & P. Kamieneski
Star formation shut down by multiphase gas outflow in a galaxy at a redshift of 2.45