Results 41 to 50 of about 103,703 (233)

High-redshift Galaxies and Black Holes Detectable with the JWST: A Population Synthesis Model from Infrared to X-Rays [PDF]

open access: yes, 2017
The first billion years of the Universe has been a pivotal time: stars, black holes (BHs), and galaxies formed and assembled, sowing the seeds of galaxies as we know them today.
M. Volonteri   +4 more
semanticscholar   +1 more source

Extended Lyman α haloes around individual high-redshift galaxies revealed by MUSE [PDF]

open access: yes, 2015
We report the detection of extended Ly alpha emission around individual star-forming galaxies at redshifts z = 3-6 in an ultradeep exposure of the Hubble Deep Field South obtained with MUSE on the ESO-VLT.
L. Wisotzki   +29 more
semanticscholar   +1 more source

Unveiling the Cosmic Chemistry. II. “Direct” Te-based Metallicity of Galaxies at 3 < z < 10 with JWST/NIRSpec

open access: yesThe Astrophysical Journal
We report the detection of the [O iii ] auroral line in 42 galaxies within the redshift range of 3 < z < 10. These galaxies were selected from publicly available JWST data releases, including the JADES and PRIMAL surveys, and observed using both the low ...
Priyanka Chakraborty   +12 more
doaj   +1 more source

CEERS Key Paper. III. The Diversity of Galaxy Structure and Morphology at z = 3–9 with JWST

open access: yesThe Astrophysical Journal Letters, 2023
We present a comprehensive analysis of the evolution of the morphological and structural properties of a large sample of galaxies at z = 3–9 using early James Webb Space Telescope (JWST) CEERS NIRCam observations. Our sample consists of 850 galaxies at z
Jeyhan S. Kartaltepe   +61 more
doaj   +1 more source

The Effect of Seductive Details on Knowledge Retention in Physics Videos: A Mixed Methods Study

open access: yesJournal of Research in Science Teaching, Volume 62, Issue 8, Page 1923-1940, October 2025.
ABSTRACT Research reports that interesting but irrelevant information, seductive details, in teaching material can impede learning. In science education, the inclusion of historical narratives in lessons to promote interest has been recommended but may hinder learning.
Richard Brock   +2 more
wiley   +1 more source

The distribution of neutral hydrogen around high-redshift galaxies and quasars in the EAGLE simulation [PDF]

open access: yes, 2015
The observed high covering fractions of neutral hydrogen (HIHI) with column densities above ∼1017 cm−2 around Lyman-Break Galaxies (LBGs) and bright quasars at redshifts z ∼ 2–3 has been identified as a challenge for simulations of galaxy formation.
A. Rahmati   +6 more
semanticscholar   +1 more source

Reionisation and High-Redshift Galaxies: The View from Quasar Absorption Lines [PDF]

open access: yesPublications Astronomical Society of Australia, 2015
Determining when and how the first galaxies reionised the intergalactic medium promises to shed light on both the nature of the first objects and the cosmic history of baryons.
G. Becker, J. Bolton, A. Lidz
semanticscholar   +1 more source

Simulating High-redshift Galaxies: Enhancing UV Luminosity with Star Formation Efficiency and a Top-heavy IMF

open access: yesThe Astrophysical Journal
Recent findings from photometric and spectroscopic JWST surveys have identified examples of high-redshift galaxies at z  ≳ 10. These high- z galaxies appear to form much earlier and exhibit greater UV luminosity than predicted by theoretical work.
Tae Bong Jeong   +3 more
doaj   +1 more source

UV–Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H2CO3)n Calculations

open access: yesChemPhysChem, Volume 26, Issue 18, September 19, 2025.
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu   +7 more
wiley   +1 more source

Why do high-redshift galaxies show diverse gas-phase metallicity gradients? [PDF]

open access: yes, 2016
Recent spatially resolved observations of galaxies at z ∼ 0.6–3 reveal that high-redshift galaxies show complex kinematics and a broad distribution of gas-phase metallicity gradients.
Xiangcheng Ma   +10 more
semanticscholar   +1 more source

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