Results 71 to 80 of about 2,644 (224)

The James Webb Space Telescope prompts a rethink of how galaxies form. [PDF]

Proc Natl Acad Sci U S A, 2023
Mann A.
europepmc   +1 more source

Dossier : Le James Webb Space Telescope, l’avenir de l’astronomie dans l’espace

, 2021

openalex   +1 more source

The James Webb Space Telescope NIRSpec-PRISM Transmission Spectrum of the Super-puff, Kepler-51d

The Astronomical Journal
Kepler-51 is a 500 Myr G dwarf hosting three “super-puffs” and one low-mass nontransiting planet. Kepler-51d, the coolest ( T _eq ∼ 350 K) transiting planet in this system is also one of the lowest-density super-puffs known to date ( ρ _p = 0.038 ± 0.009
Jessica E. Libby-Roberts, Aaron Bello-Arufe, Zachory K. Berta-Thompson, Caleb I. Cañas, Yayaati Chachan, Renyu Hu, Yui Kawashima, Catriona Murray, Kazumasa Ohno, Armen Tokadjian, Suvrath Mahadevan, Kento Masuda, Leslie Hebb, Caroline Morley, Guangwei Fu, Peter Gao, Kevin B. Stevenson   +16 more
doaj   +1 more source

The James Webb Space Telescope’s Plan for Operations and Instrument Capabilities for Observations in the Solar System [PDF]

, 2016
Stefanie N. Milam, John A. Stansberry, George Sonneborn, Cristina Thomas   +3 more
openalex   +1 more source

Slow Rotation for the Super-puff Planet Kepler-51d

The Astrophysical Journal Letters
Super-puffs are low-density planets of unknown origin and composition. If they form by accreting nebular gas through a circumplanetary disk, one might expect super-puffs to be spinning quickly. Here, we derive upper limits on the rotational oblateness of
Caleb Lammers, Joshua N. Winn
doaj   +1 more source

Improved Empirical Backgrounds for JWST NIRISS Image/Wide-field Slitless Spectroscopy Data Reduction

The Astronomical Journal
The Near Infrared Imager and Slitless Spectrograph (NIRISS) on the James Webb Space Telescope (JWST) is a versatile instrument for collecting imaging and wide-field slitless spectroscopy (WFSS) data for surveys of galaxy clusters, emission-line galaxies,
Raphael E. Hviding, Ivelina G. Momcheva, Leonardo Clarke   +2 more
doaj   +1 more source

Fate of James Webb Space Telescope murky [PDF]

Eos, Transactions American Geophysical Union, 2011
The James Webb Space Telescope (JWST), the next‐generation successor to the Hubble Space Telescope, was put on the chopping block by the U.S. House of Representatives Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies. The subcommittee approved a measure on 7 July that “terminates funding for [JWST], which is billions of ...
openaire   +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

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

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