Results 91 to 100 of about 2,644 (224)

JWST MIRI/Medium Resolution Spectrograph (MRS) Observations and Spectral Models of the Underluminous Type Ia Supernova 2022xkq

open access: yesThe Astrophysical Journal
We present a JWST mid-infrared (MIR) spectrum of the underluminous Type Ia Supernova (SN Ia) 2022xkq, obtained with the medium-resolution spectrometer on the Mid-Infrared Instrument (MIRI) ∼130 days post-explosion.
J. M. DerKacy   +46 more
doaj   +1 more source

The AURORA Survey: Tracing Galactic Outflows at z ≳ 2.5 with JWST/NIRSpec Near-ultraviolet Absorption Lines

open access: yesThe Astrophysical Journal
We probe galactic-scale outflows in star-forming galaxies at z  ≳ 2.5 drawn from the JWST/NIRSpec AURORA program. For the first time, we directly compare outflow properties from the early Universe to the present day using near-UV absorption lines.
Emily Kehoe   +16 more
doaj   +1 more source

JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e

open access: yesThe Astrophysical Journal Letters
The TRAPPIST-1 system offers one of the best opportunities to characterize temperate terrestrial planets beyond our own solar system. Within the TRAPPIST-1 system, planet e stands out as highly likely to sustain surface liquid water if it possesses an ...
Ana Glidden   +27 more
doaj   +1 more source

The Mid-Infrared Instrument for theJames Webb Space Telescope, X: Operations and Data Reduction [PDF]

open access: bronze, 2015
Karl D. Gordon   +28 more
openalex   +1 more source

New Insight from the James Webb Space Telescope on Variable Active Galactic Nuclei

open access: yesThe Astrophysical Journal
Variability detected in galaxies is usually attributed to their active galactic nuclei (AGNs). While all AGNs are intrinsically variable, the AGN unification model predicts that Type 2 AGNs rarely vary because their engines are blocked by dust tori ...
Bangzheng Sun   +3 more
doaj   +1 more source

An Extremely Low-density Exoplanet Spins Slow

open access: yesThe Astrophysical Journal Letters
We present constraints on the shape of Kepler-51d, which is a superpuff with a mass ∼6 M _⊕ and a radius ∼9 R _⊕ , based on detailed modeling of the transit light curve from James Webb Space Telescope (JWST) NIRSpec. The projected shape of this extremely
Quanyi Liu   +5 more
doaj   +1 more source

Giant Planet Observations with the James Webb Space Telescope [PDF]

open access: bronze, 2016
James Norwood   +10 more
openalex   +1 more source

Home - About - Disclaimer - Privacy