Results 91 to 100 of about 25,446 (221)

The James Webb Space Telescope Absolute Flux Calibration. IV. Near-Infrared Imager and Slitless Spectrograph Imaging

The Astronomical Journal
The absolute flux calibration of the Near-infrared Imager and Slitless Spectrograph (NIRISS) imaging modes is derived using observations of photometric standards with the James Webb Space Telescope (JWST).
Kevin Volk, Paul Goudfrooij
doaj   +1 more source

Lyman continuum leakage versus quenching with the James Webb Space Telescope: the spectral signatures of quenched star formation activity in reionization-epoch galaxies [PDF]

, 2018
Christian Binggeli, Erik Zackrisson, Kristiaan Pelckmans, Rubén Cubo, Hannes Jensen, Ikko Shimizu   +5 more
openalex   +1 more source

Our History in the Stars [PDF]

John C. Mather is senior project director of NASA's James Webb Space Telescope (JWST), successor to the Hubble Telescope. Nearly cancelled in summer 2011 during a flurry of federal budget cuts, the project was fully funded by Congress in November 201l ...
Mather, John C.
core   +1 more source

Detecting population III galaxies with HST and JWST

, 2012
A small fraction of the atomic-cooling halos assembling at ...
Zackrisson, E.
core   +1 more source

On the Detection of Exorings in Reflected Light with JWST NIRCam

The Astronomical Journal
When directly imaging a cold-giant exoplanet hosting a ring system, the reflected light from the rings can outshine the planet’s thermal emission and reflected light in the near-infrared.
Rachel Bowens-Rubin, Mary Anne Limbach, Sam Hopper, Klaus Subbotina Stephenson, Matson Garza, Leigh N. Fletcher, Matthew Hedman   +6 more
doaj   +1 more source

The Perfect Host: JWST Cepheid Observations in a Background-free Type Ia Supernova Host Confirm No Bias in Hubble-constant Measurements

The Astrophysical Journal Letters
Cycle 1 JWST observations of Cepheids in Type Ia supernova (SN Ia) hosts resolved their red-giant-dominated near-infrared backgrounds, sharply reducing crowding and showing that photometric bias in lower-resolution Hubble Space Telescope (HST) data does ...
Adam G. Riess, Siyang Li, Gagandeep S. Anand, Wenlong Yuan, Louise Breuval, Stefano Casertano, Lucas M. Macri, Dan Scolnic, Yukei S. Murakami, Alexei V. Filippenko, Thomas G. Brink   +10 more
doaj   +1 more source

James Webb Space Telescope optical simulation testbed IV: linear control alignment of the primary segmented mirror and the secondary mirror [PDF]

, 2017
Sylvain Egron, Rémi Soummer, Vincent Michau, Aurélie Montmerle-Bonnefois, Marc Ferrari, Marshall D. Perrin, Laurent Pueyo, Mamadou N’Diaye, Charles-Philippe Lajoie, Joseph D. Long, Élodie Choquet, Olivier Levecq, Johan Mazoyer, Peter Petrone, Lucie Leboulleux, Anand Sivaramakrishnan   +15 more
openalex   +1 more source

Expanding the Ice Inventory of NGC 1333 IRAS 2A with INDRA Using JWST Observations: Tracing Organic Refractories and Beyond

The Astrophysical Journal Supplement Series
In the era of the James Webb Space Telescope (JWST), with its unprecedented sensitivity and spectral resolution, infrared spectral surveys have revealed a rich inventory of ices, including complex organic molecules (COMs), in young stellar objects ...
Prathap Rayalacheruvu, Liton Majumdar, W. R. M. Rocha, Michael E. Ressler, Pabitra Ranjan Giri, S. Maitrey, Karen Willacy, D. C. Lis, Yuan Chen, P. D. Klaassen   +9 more
doaj   +1 more source

ITT ISIM Kinematic Mounts [PDF]

The various kinematic mounts for the Integrated Science Instrument Module (ISIM) for the James Webb Space Telescope are shown.
Geithner, Paul
core   +1 more source

The Integration and Test Program of the James Webb Space Telescope [PDF]

, 2011
With the delivery of its flight scientific instruments and the completion of all telescope optics both scheduled to occur later this year, the James Webb Space Telescope (JWST) will enter into a challenging integration and test (I&T) program.
Randy, Kimble
core   +2 more sources