Results 71 to 80 of about 176,490 (172)
JWST TRAPPIST-1 e/b Program: Motivation and First Observations
The Astronomical JournalOne of the forefront goals in the field of exoplanets is the detection of an atmosphere on a temperate terrestrial exoplanet, and among the best suited systems to do so is TRAPPIST-1.
Natalie H. Allen +26 more
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JWST COMPASS: A NIRSpec G395H Transmission Spectrum of the Super-Earth GJ 357 b
The Astronomical JournalWe present JWST NIRSpec/G395H transmission spectroscopy observations of GJ 357 b, a warm ( T _eq ≈ 525 K) super-Earth (1.2 R _⊕ , 1.84 M _⊕ ) orbiting a nearby M3-type star, with a median precision of 18 ppm and 27 ppm in NRS1 and NRS2, respectively ...
Jea Adams Redai +16 more
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Hot Rocks Survey. V. Secondary Eclipse Photometry of GJ 3473 b with JWST/MIRI
The Astronomical JournalJWST is transforming our ability to characterize small exoplanets, from sub-Neptunes to rocky worlds. A key open question is whether highly irradiated rocky planets can retain atmospheres or are stripped bare by stellar irradiation—a boundary that ...
Måns Holmberg +18 more
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No Thick Atmosphere on the Terrestrial Exoplanet Gl 486b
The Astrophysical Journal LettersA primary science goal for JWST is to detect and characterize the atmospheres of terrestrial planets orbiting M dwarfs (M-Earths). The existence of atmospheres on M-Earths is highly uncertain because their host stars’ extended history of high X-ray and ...
Megan Weiner Mansfield +10 more
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Characterization of Extrasolar Planets Using SOFIA [PDF]
, 2010 Topics include: the landscape of extrasolar planets, why focus on transiting planets, some history and Spitzer results, problems in atmospheric structure or hot Jupiters and hot super Earths, what observations are needed to make progress, and what SOFIA ...
Deming, Drake
core
Validation of a Third Earth-sized Planet in the TOI-2267 Binary System
The Astronomical JournalWe report the validation of a third terrestrial exoplanet in the nearby (22 pc) TOI-2267 system. TOI-2267 is a binary system with stellar components TOI-2267A (M5, 3030 K) and TOI-2267B (M6, 2930 K), with an on-sky separation of 0 $\mathop{.}\limits ...
Michael Greklek-McKeon +15 more
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Unraveling the complex inventory of biorelevant organics in the plumes of icy moons. [PDF]
Proc Natl Acad Sci U S A, 2023 Kaiser RI.
europepmc +1 more source
86th Annual Meeting of the Meteoritical Society (2024)
Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley +1 more source
The Astrophysical JournalNASA’s Habitable Worlds Observatory (HWO) will search for biosignatures on Earth-like exoplanets using reflected light spectroscopy. A critical instrument design parameter is resolving power, which must balance biosignature detectability against exposure
Samantha Gilbert-Janizek +2 more
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The Coupled Impacts of Atmospheric Composition and Obliquity on the Climate Dynamics of TRAPPIST-1e
The Astrophysical JournalPlanets in multiplanet systems are expected to migrate inward as near-resonant chains, thus allowing them to undergo gravitational planet–planet interactions and possibly maintain a nonzero obliquity.
Tobi Hammond, Thaddeus D. Komacek
doaj +1 more source