Results 1 to 10 of about 25,608 (91)
Morpheus Reveals Distant Disk Galaxy Morphologies with JWST: The First AI/ML Analysis of JWST Images
Astrophysical Journal Letters, 2023 The dramatic first images with JWST demonstrated its power to provide unprecedented spatial detail for galaxies in the high-redshift universe. Here, we leverage the resolution and depth of the JWST Cosmic Evolution Early Release Science Survey data in ...
Sandro Tacchella +2 more
exaly +2 more sources
The Astrophysical Journal Letters, 2023 Spatially compact objects with extremely red color in the rest-frame optical to near-infrared (0.4–1 μ m) and blue color in the rest-frame ultraviolet (UV; 0.2–0.4 μ m) have been discovered at 5 < z < 9 using the James Webb Space Telescope (JWST).
Akatoki Noboriguchi +4 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 High-resolution James Webb Space Telescope (JWST) observations can test confusion-limited Hubble Space Telescope (HST) observations for a photometric bias that could affect extragalactic Cepheids and the determination of the Hubble constant.
Adam G. Riess +9 more
doaj +1 more source
Early Insights for Atmospheric Retrievals of Exoplanets Using JWST Transit Spectroscopy
The Astrophysical Journal Letters, 2023 We have entered the era of the James Webb Space Telescope (JWST). We use the first JWST transmission spectrum of the hot Saturn-mass exoplanet, WASP-39 b, obtained with the NIRSpec instrument in the 3–5 μ m range to investigate (a) what atmospheric ...
Savvas Constantinou +2 more
doaj +1 more source
UNCOVER: Illuminating the Early Universe—JWST/NIRSpec Confirmation of z > 12 Galaxies
The Astrophysical Journal Letters, 2023 Observations of high-redshift galaxies provide a critical direct test to the theories of early galaxy formation, yet to date, only three have been spectroscopically confirmed at z > 12.
Bingjie Wang +26 more
doaj +1 more source
The Astrophysical Journal Supplement Series, 2023 JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging data release from the JWST ...
Marcia J. Rieke +58 more
doaj +1 more source
Detecting Pair-Instability Supernovae at z<5 with the James Webb Space Telescope [PDF]
, 2020 Pair-instability supernovae (PISNe) are the ultimate cosmic lighthouses, capable of being observed at ...
Regos, Eniko +2 more
core +2 more sources
James Webb Space Telescope Optical Simulation Testbed I: Overview and First Results [PDF]
, 2014 The James Webb Space Telescope (JWST) Optical Simulation Testbed (JOST) is a tabletop workbench to study aspects of wavefront sensing and control for a segmented space telescope, including both commissioning and maintenance activities.
Anderson, Rachel +15 more
core +1 more source
JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS
The Astrophysical Journal Supplement Series, 2023 We present JWST Extragalactic Medium-band Survey, the first public medium-band imaging survey carried out using JWST/NIRCam and NIRISS. These observations use ∼2 and ∼4 μ m medium-band filters (NIRCam F182M, F210M, F430M, F460M, F480M; and NIRISS F430M ...
Christina C. Williams +34 more
doaj +1 more source
Early Results from GLASS-JWST. XI. Stellar Masses and Mass-to-light Ratio of z > 7 Galaxies
The Astrophysical Journal Letters, 2023 We exploit James Webb Space Telescope (JWST) NIRCam observations from the GLASS-JWST-Early Release Science program to investigate galaxy stellar masses at z > 7.
P. Santini +29 more
doaj +1 more source