Results 81 to 90 of about 1,703 (181)
The Astrophysical JournalInferring the properties of transiting exoplanet atmospheres relies on comparing models to spectroscopic observations. Atmosphere models, however, make a range of assumptions, from one-dimensional (1D, varying with altitude) radiative-convective ...
Lindsey S. Wiser +3 more
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CORINOS. IV. Quantifying Baseline-fitting Uncertainties in SO2 Ice Measurements with JWST/MIRI
The Astrophysical JournalSulfur dioxide (SO _2 ) ice has been tentatively detected in protostellar envelopes, but its reliability as a solid-state sulfur reservoir remains unclear.
Rachel E. Gross +17 more
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New Insight from the James Webb Space Telescope on Variable Active Galactic Nuclei
The Astrophysical JournalVariability 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
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The Astrophysical JournalWe 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
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Strong gravitational lensing with the James Webb Space Telescope
Contemporary PhysicsThe theory of General Relativity predicts that, since massive bodies curve spacetime, light from a distant source would be deflected by a foreground massive object -- a phenomenon known as \emph{Gravitational Lensing}. Historically, the strength of deflection of light from background stars by the sun, during the 1919 solar eclipse, supplied one of the ...
openaire +2 more sources
The Astrophysical JournalWe 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
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James Webb Space Telescope segment phasing using differential optical transfer functions. [PDF]
J Astron Telesc Instrum Syst, 2015 Codona JL, Doble N.
europepmc +1 more source
JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e
The Astrophysical Journal LettersThe 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
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JWST Nebular Spectroscopy of SN 2023qov: Circumstellar Dust Emission in a Normal Type Ia Supernova
The Astrophysical JournalWe present panchromatic observations of the Type Ia supernova (SN Ia) 2023qov, ranging from ∼2 weeks before to ∼1 yr after maximum light. JWST near- and mid-infrared spectra at +276 and +363 days show ∼400 K dust emission that cools by ∼75 K between ...
Colin W. Macrie +45 more
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An Extremely Low-density Exoplanet Spins Slow
The Astrophysical Journal LettersWe 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
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