Results 71 to 80 of about 3,893,324 (356)
A review of the development of miniature mass spectrometry for planetary exploration
Green Analytical ChemistryOver the past five decades, miniature mass spectrometry plays a crucial role in planetary exploration, offering the sensitivity, resolution and precision required to analyze elements and isotopes, detect trace gases, and study the composition of ...
Dong Yang, Xiangkun Wu, Keyong Hou
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Quantifying the Key Factors Affecting the Escape of Planetary Atmospheres
The Astrophysical Journal, 2023 The habitability of Earth-like planets is an increasingly important subject in astrophysics and in planetary sciences. Atmospheric escape plays a vital role in the evolution of the habitability of Earth-like planets.
J. Luo, H.-Q. He, G.-S. Tong, Jiao Li
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Masses of the Central Stars of Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1997 The aim of this study is to derive the masses of the central stars (CSPN) for a large sample of the planetary nebulae (PN). These masses, M∗, are derived from the observed PN positions in three diagnostic diagrams and their comparison with evolutionary tracks of model PN.
S.K. Górny, G. Stasińska, R. Tylenda
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Mass transport in a moist planetary climate model [PDF]
Astronomy & Astrophysics, 2022 Planetary climate models (PCMs) are developed to explore planetary climates other than that of the Earth. Therefore, the methods implemented need to be suitable for a large diversity of conditions. Every planet with a significant atmosphere has condensible cycles (e.g. the hydrological cycle), which can play an essential role in the planet’s appearance
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Advanced Functional Materials, EarlyView.Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida +16 more
wiley +1 more source
Enhanced Stability in Planetary Systems with Similar Masses
The Astronomical JournalThis study employs numerical simulations to explore the relationship between the dynamical instability of planetary systems and the uniformity of planetary masses within the system, quantified by the Gini index.
Dong-Hong Wu +2 more
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Optical and Near-infrared Spectra of σ Orionis Isolated Planetary-mass Objects [PDF]
, 2017 We have obtained low-resolution optical (0.7–0.98 μm) and near-infrared (1.11–1.34 μm and 0.8–2.5 μm) spectra of 12 isolated planetary-mass candidates (J = 18.2–19.9 mag) of the 3 Myr σ Orionis star cluster with the aim of determining the spectroscopic ...
M. Z. Zapatero Osorio +2 more
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Advanced Functional Materials, EarlyView.Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth +8 more
wiley +1 more source
Disruption of Planetary System Architectures by Stellar Flybys
UniverseWe investigate the survivability of solar system-like planetary systems during close encounters in stellar associations using a suite of 1980 N-body simulations.
Robert Przyłuski +9 more
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The Planetary Mass–Radius Relation and Its Dependence on Orbital Period as Measured by Transit Timing Variations and Radial Velocities [PDF]
, 2017 The two most common techniques for measuring planetary masses—the radial velocity (RV) and the transit timing variation (TTV) techniques—have been observed to yield systematically different masses for planets of similar radii.
S. Mills, T. Mazeh
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