A CEERS discovery of an accreting supermassive black hole 570 Myr after the Big Bang: identifying a progenitor of massive z> 6 quasars
RL Larson, SL Finkelstein, DD Kocevski… - The Astrophysical …, 2023 - iopscience.iop.org
We report the discovery of an accreting supermassive black hole at z= 8.679. This galaxy,
denoted here as CEERS_1019, was previously discovered as a Lyα-break galaxy by …
denoted here as CEERS_1019, was previously discovered as a Lyα-break galaxy by …
Direct T e-based metallicities of z= 2–9 galaxies with JWST/NIRSpec: empirical metallicity calibrations applicable from reionization to cosmic noon
RL Sanders, AE Shapley, MW Topping… - The Astrophysical …, 2024 - iopscience.iop.org
We report detections of the [O iii] λ4364 auroral emission line for 16 galaxies at z= 2.1–8.7,
measured from JWST/NIRSpec observations obtained as part of the Cosmic Evolution Early …
measured from JWST/NIRSpec observations obtained as part of the Cosmic Evolution Early …
[HTML][HTML] Which came first: supermassive black holes or galaxies? Insights from JWST
Insights from JWST observations suggest that active galactic nuclei feedback evolved from a
short-lived, high-redshift phase in which radiatively cooled turbulence and/or momentum …
short-lived, high-redshift phase in which radiatively cooled turbulence and/or momentum …
JWST Identification of Extremely Low C/N Galaxies with [N/O]≳ 0.5 at z∼ 6–10 Evidencing the Early CNO-cycle Enrichment and a Connection with Globular Cluster …
Y Isobe, M Ouchi, N Tominaga… - The Astrophysical …, 2023 - iopscience.iop.org
We present chemical abundance ratios of 70 star-forming galaxies at z∼ 4–10 observed by
the JWST/NIRSpec Early Release Observations, GLASS, and CEERS programs. Among the …
the JWST/NIRSpec Early Release Observations, GLASS, and CEERS programs. Among the …
Extreme N-emitters at high redshift: Possible signatures of supermassive stars and globular cluster or black hole formation in action
R Marques-Chaves, D Schaerer… - Astronomy & …, 2024 - aanda.org
Context. Recent James Webb Space Telescope (JWST) spectroscopic observations of the
z= 10.6 galaxy GN-z11 have revealed a very peculiar UV spectrum exhibiting intense …
z= 10.6 galaxy GN-z11 have revealed a very peculiar UV spectrum exhibiting intense …
JADES: Carbon enrichment 350 Myr after the Big Bang
Finding the emergence of the first metals in the early Universe and identifying their origin are
some of the most important goals of modern astrophysics. We present deep JWST/NIRSpec …
some of the most important goals of modern astrophysics. We present deep JWST/NIRSpec …
Nitrogen enrichment and clustered star formation at the dawn of the Galaxy
V Belokurov, A Kravtsov - Monthly Notices of the Royal …, 2023 - academic.oup.com
Anomalously high nitrogen-to-oxygen abundance ratios [N/O] are observed in globular
clusters (GCs), among the field stars of the Milky Way (MW), and even in the gas in az≈ 11 …
clusters (GCs), among the field stars of the Milky Way (MW), and even in the gas in az≈ 11 …
Metal-poor star formation at z > 6 with JWST: new insight into hard radiation fields and nitrogen enrichment on 20 pc scales
MW Topping, DP Stark, P Senchyna… - Monthly Notices of …, 2024 - academic.oup.com
Nearly a decade ago, we began to see indications that reionization-era galaxies power hard
radiation fields rarely seen at lower redshift. Most striking were detections of nebular C iv …
radiation fields rarely seen at lower redshift. Most striking were detections of nebular C iv …
EMPRESS. XIII. Chemical Enrichment of Young Galaxies Near and Far at z∼ 0 and 4–10: Fe/O, Ar/O, S/O, and N/O Measurements with a Comparison of Chemical …
K Watanabe, M Ouchi, K Nakajima… - The Astrophysical …, 2024 - iopscience.iop.org
We present gas-phase elemental abundance ratios of thirteen local extremely metal-poor
galaxies (EMPGs), including our new Keck/LRIS spectroscopy determinations together with …
galaxies (EMPGs), including our new Keck/LRIS spectroscopy determinations together with …
The Puzzling Properties of the MACS1149-JD1 Galaxy at z= 9.11
We analyze new JWST NIRCam and NIRSpec data on the redshift 9.11 galaxy MACS1149-
JD1 (hereafter JD1). Our NIRCam imaging data reveal that JD1 comprises three spatially …
JD1 (hereafter JD1). Our NIRCam imaging data reveal that JD1 comprises three spatially …