Results 51 to 60 of about 10,001 (169)
Meteoritics &Planetary Science, Volume 59, Issue 9, Page 2241-2259, September 2024.Abstract We analyzed the methanol extracts of six pristine specimens of the Tagish Lake meteorite (TL1, TL4, TL5A, TL6, TL7, and TL10a) and heated and unheated samples of Allende using high‐performance liquid chromatography coupled with high‐resolution, accurate mass–mass spectrometry (HPLC‐HRAM‐MS).
N. Randazzo +5 more
wiley +1 more source
Near the Runaway: The Climate and Habitability of Teegarden’s Star b
The Astrophysical Journal LettersTeegarden’s Star b, a nearby terrestrial world receiving an Earth-like instellation, is a prime candidate for next-generation observatories targeting temperate exoplanets in their habitable zones.
Ryan Boukrouche +2 more
doaj +1 more source
The Planetary Science JournalUsing mass–radius composition models, small planets ( R ≲ 2 R _⊕ ) are typically classified into three types: iron-rich, nominally Earth-like, and those with solid/liquid water and/or atmosphere.
J. G. Schulze +6 more
doaj +1 more source
Knudsen effusion mass spectrometry: Current and future approaches
Rapid Communications in Mass Spectrometry, Volume 38, Issue 14, 30 July 2024.Rationale Knudsen effusion mass spectrometry (KEMS) has been a powerful tool in physical chemistry since 1954. There are many excellent reviews of the basic principles of KEMS in the literature. In this review, we focus on the current status and potential growth areas for this instrumental technique.
Nathan S. Jacobson +4 more
wiley +1 more source
The Astrophysical Journal Supplement Series, 2023 Characterizing the interiors of rocky exoplanets is important to understand planetary populations and further investigate planetary habitability. New observable constraints and inference techniques have been explored for this purpose.
Yong Zhao, Dongdong Ni, Zibo Liu
doaj +1 more source
Earth's Alfvén Wings Driven by the April 2023 Coronal Mass Ejection
Geophysical Research Letters, Volume 51, Issue 14, 28 July 2024.Abstract We report a rare regime of Earth's magnetosphere interaction with sub‐Alfvénic solar wind in which the windsock‐like magnetosphere transforms into one with Alfvén wings. In the magnetic cloud of a Coronal Mass Ejection (CME) on 24 April 2023, NASA's Magnetospheric Multiscale mission distinguishes the following features: (a) unshocked and ...
Li‐Jen Chen +35 more
wiley +1 more source
Electrical Conductivity of Dense MgSiO3 Melt Under Static Compression
Geophysical Research Letters, Volume 51, Issue 12, 28 June 2024.Abstract The magnetic fields of terrestrial planets are created by core convection. Molten silicate mantles could also generate magnetic fields through their convective motion, known as a silicate dynamo. Recent computational studies have suggested that silicate melts may exhibit high electrical conductivity (EC) at temperatures above 4000 K due to ...
Yoshiyuki Okuda +4 more
wiley +1 more source
LHS 475 b: A Potential Venus Analog Orbiting a Nearby M Dwarf
The Astronomical JournalBased on photometric observations by TESS, we present the discovery of a potential Venus analog transiting LHS 475, an M3 dwarf located 12.5 pc from the Sun. The mass of the star is 0.274 ± 0.015 M _☉ .
Kristo Ment +17 more
doaj +1 more source
Thermal Equation of State of Cubic Silicon Carbide at High Pressures
ChemPhysChem, Volume 25, Issue 9, May 2, 2024.The thermoelastic properties of SiC with a zinc‐blende crystal structure are experimentally determined. Previous experimental studies contained errors due to significant uncertainties of measured pressures and temperatures and unreleased residual stresses.
Artem Chanyshev +11 more
wiley +1 more source
From Earths to Super-Earths: Five New Small Planets Transiting M Dwarf Stars
The Astronomical JournalEarth-sized planets transiting M dwarf stars present one of the best opportunities with current facilities for studying the atmospheric and bulk compositions of terrestrial worlds. Here, we statistically validate five new transiting Earth and super-Earth
Jonathan Gomez Barrientos +41 more
doaj +1 more source