Results 51 to 60 of about 58,337 (174)

Comparing telluric removal methods in their capability to recover injected exoplanet atmosphere signals with high resolution emission spectroscopy [PDF]

RAS Techniques and Instruments
For ground-based high-resolution spectroscopic exoplanet atmosphere studies, removing the contamination from telluric and stellar lines is a crucial step in the analysis process.
M. A. F. Keniger, Matteo Brogi, David J Armstrong, S. Gandhi   +3 more
semanticscholar   +1 more source

Effect of Laboratory Reagents for Cleaning Modern Contamination on the δ15N Integrity of Nitrogen‐Poor Samples

Rapid Communications in Mass Spectrometry, Volume 40, Issue 19, 15 October 2026.
ABSTRACT Rationale Nitrogen isotope values have been widely used for tracing ancient biogeochemical processes, but contaminant‐sensitive materials, such as Precambrian sedimentary rocks, meteorites, or returned extraterrestrial samples, often have low nitrogen levels and are thus vulnerable to modern organic contamination.
Kunmanee Bubphamanee, Andrew Schauer, Roger Buick   +2 more
wiley   +1 more source

The Complexity of Deep Aqueous Fluids in Planetary Ultramafic Mantles

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Planetary volatiles cycle through a planet's crust, mantle, and atmosphere, playing a crucial role in surface processes and habitability. Discussions of planetary volatiles traditionally focus on water, carbon, nitrogen, and sulfur, but fluids in contact with silicate rocks and ultramafic mantles can contain significant amounts of magnesium ...
Sophia E. Economon, Dimitri A. Sverjensky   +1 more
wiley   +1 more source

Seasonal Changes in the Atmosphere of HD 80606 b Observed with JWST’s NIRSpec/G395H

The Astronomical Journal
High-eccentricity gas giant planets serve as unique laboratories for studying the thermal and chemical properties of H/He-dominated atmospheres. One of the most extreme cases is HD 80606 b—a hot Jupiter orbiting a Sun-like star with an eccentricity of 0 ...
James T. Sikora, Jason F. Rowe, Jared Splinter, Saugata Barat, Lisa Dang, Nicolas B. Cowan, Thomas Barclay, Knicole D. Colón, Jean-Michel Désert, Stephen R. Kane, Joe Llama, Hinna Shivkumar, Keivan G. Stassun, Elisa V. Quintana   +13 more
doaj   +1 more source

Interactions of Sublimated Frost With Volcanic Plumes: Modeling Io's SO2 Atmosphere Using the DSMC Method

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Io's tenuous atmosphere consists primarily of sulfur dioxide (SO2 ${\text{SO}}_{2}$) with observed column densities of approximately 1016−1017 $1{0}^{16}-1{0}^{17}$ cm−2 ${\text{cm}}^{-2}$. However, it remains uncertain whether the sublimation of SO2 ${\text{SO}}_{2}$ surface frost or volcanic outgassing is the primary source of the SO2 ...
Leander Schlarmann, Audrey Vorburger, Tim Mosimann, Nicolas Thomas, Peter Wurz   +4 more
wiley   +1 more source

Bistability, Oscillations, and Multistability on Hycean Planets

The Astrophysical Journal
Hycean planets are hypothetical exoplanets characterized by H _2 O oceans and H _2 -rich atmospheres. These planets are high-priority targets for biosignature searches, as they combine abundant surface liquid water with easy-to-characterize H _2 -rich ...
Yichen Gao, Daniel D. B. Koll, Feng Ding
doaj   +1 more source

Next-generation Exo-REM atmospheric models: Application to VHS 1256 b to emulate patchy clouds [PDF]

Astronomy & Astrophysics
Condensate clouds are a defining feature of brown dwarf and exoplanet atmospheres, producing a broad range of colours on the colour–magnitude diagram (CMD) and giving rise to spectral features such as the distinct ∼10,mic spectral imprint, a prominent ...
A. Radcliffe, B. Charnay, A. Lagrange, F. Kiefer, B. B'ezard, Simon Petrus, P. Palma-Bifani, M. Ravet, J. Leconte, G. Marleau   +9 more
semanticscholar   +1 more source

Weakening Tropical West Pacific Ascent Strength Reduces East Pacific Low Clouds via Lower Free‐Tropospheric Moisture Convergence

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract Low clouds (LC) are the largest source of uncertainty in the climate response to increased CO2 ${\text{CO}}_{2}$ in global climate models. This is due to the multitude of factors that affect their behavior and how these are characterized across models.
Danny McCulloch, Mark J. Webb, F. Hugo Lambert, Geoffrey K. Vallis   +3 more
wiley   +1 more source

The Spin Zone: Synchronously and Asynchronously Rotating Land Planets Have Spectral Differences in Transmission

The Planetary Science Journal
New observational facilities are beginning to enable insights into the three-dimensional (3D) nature of exoplanets. Transmission spectroscopy is the most widely used method for characterizing transiting temperate exoplanet atmospheres, but because it ...
Nicholas Scarsdale, C. E. Harman, Thomas J. Fauchez   +2 more
doaj   +1 more source

HAZMAT. II. Ultraviolet Variability of Low-mass Stars in the GALEX Archive [PDF]

, 2017
The ultraviolet (UV) light from a host star influences a planet’s atmospheric photochemistry and will affect interpretations of exoplanetary spectra from future missions like the James Webb Space Telescope.
B. Miles, E. Shkolnik
semanticscholar   +1 more source