Results 81 to 90 of about 2,186 (186)

The Thickness of Galaxy Disks from z = 5 to 0 Probed by JWST

open access: yesThe Astrophysical Journal Letters
Although a thick disk is a structure prevalent in local disk galaxies and also present in our home Galaxy, its formation and evolution are still unclear.
Jianhui Lian, Li Luo
doaj   +1 more source

EPOCHS. I. The Discovery and Star-forming Properties of Galaxies in the Epoch of Reionization at 6.5 < z < 18 with PEARLS and Public JWST Data

open access: yesThe Astrophysical Journal
We present in this paper the discovery, properties, and a catalog of 1165 high-redshift 6.5  12 in our sample and describe their properties. Finally, we note a significant observed excess of galaxies compared to models at z  > 12, revealing a tension ...
Christopher J. Conselice   +34 more
doaj   +1 more source

Multivariate Predictors of Lyman Continuum Escape. II. Predicting Lyman Continuum Escape Fractions for High-redshift Galaxies

open access: yesThe Astrophysical Journal
JWST is uncovering the properties of ever-increasing numbers of galaxies at z > 6, during the epoch of reionization. Connecting these observed populations to the process of reionization requires understanding how efficiently they produce Lyman continuum (
Anne E. Jaskot   +21 more
doaj   +1 more source

Galaxies and large scale structure at high redshifts [PDF]

open access: yesProceedings of the National Academy of Sciences, 1998
It is now straightforward to assemble large samples of very high redshift ( z ∼ 3) field galaxies selected by their pronounced spectral discontinuity at the rest frame Lyman limit of hydrogen (at 912 Å).
openaire   +4 more sources

A Steep Decline in the Galaxy Space Density beyond Redshift 9 in the CANUCS UV Luminosity Function

open access: yesThe Astrophysical Journal
We present a new sample of 158 galaxies at redshift z > 7.5 selected from deep James Webb Space Telescope (JWST) NIRCam imaging of five widely separated sight lines in the CANUCS survey.
Chris J. Willott   +17 more
doaj   +1 more source

ALESS-JWST: Joint (Sub)kiloparsec JWST and ALMA Imaging of z ~ 3 Submillimeter Galaxies Reveals Heavily Obscured Bulge Formation Events

open access: yesThe Astrophysical Journal
We present JWST NIRCam imaging targeting 13 z  ~ 3 infrared-luminous ( L _IR  ∼ 5 × 10 ^12 L _⊙ ) galaxies from the ALESS survey with uniquely deep, high-resolution (0 $\mathop{.}\limits^{\unicode{x02033}}$ 08–0 $\mathop{.}\limits^{^{\prime\prime} }$ 16)
J. A. Hodge   +27 more
doaj   +1 more source

High redshift radio galaxies [PDF]

open access: yesSPIE Proceedings, 2000
7 pages including 2 figures. Paper no. 4005-10 in the proceedings of the SPIE International Symposium on 'Astronomical Telescopes and Instrumentation' held in Munich, Germany from 27-31 March ...
openaire   +2 more sources

MAMMOTH-Subaru. IV. Large Scale Structure and Clustering Analysis of Lyα Emitters and Lyα Blobs at z = 2.2–2.3

open access: yesThe Astrophysical Journal
We report the large scale structure and clustering analysis of Ly α emitters (LAEs) and Ly α blobs (LABs) at z  = 2.2–2.3. Using 3341 LAEs, 117 LABs, and 58 bright (Ly α luminosity L _Ly _α  > 10 ^43.4 erg s ^−1 ) LABs at z  = 2.2–2.3 selected with ...
Haibin Zhang   +12 more
doaj   +1 more source

CHILES. VIII. Probing the Evolution of Average H I Content in Star-forming Galaxies over the Past 5 Gyr

open access: yesThe Astrophysical Journal
Utilizing the COSMOS H I Large Extragalactic Survey (CHILES) data set, we investigate the evolution of the average atomic neutral hydrogen (H I ) properties of galaxies over the continuous redshift range 0.09 
Nicholas Luber   +11 more
doaj   +1 more source

JWST’s PEARLS: A Clumpy Ring Galaxy at z = 4.0148

open access: yesThe Astrophysical Journal
Ring galaxies are an uncommon class of galaxies whose morphology is closely related to dynamical processes that govern galaxy evolution. Some ring galaxies, known as “collisional ring galaxies,” are thought to form as a consequence of head-on collisions ...
David Vizgan   +24 more
doaj   +1 more source

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