Results 71 to 80 of about 171,913 (339)

Giant planet effects on terrestrial planet formation and system architecture [PDF]

open access: yes, 2018
The giant planets of the solar system likely played a large role in shaping the architecture of the terrestrial planets. Using an updated collision model, we conduct a suite of high resolution N-body integrations to probe the relationship between giant planet mass, and terrestrial planet formation and system architecture.
arxiv   +1 more source

A Hypothesis for the Rapid Formation of Planets [PDF]

open access: yesThe Astrophysical Journal Letters, 2019
Abstract The discovery of 1I/‘Oumuamua confirmed that planetesimals must exist in great numbers in interstellar space. Originally generated during planet formation, they are scattered from their original systems and subsequently drift through interstellar space.
Michele T. Bannister   +2 more
openaire   +5 more sources

Oxygen Doping Enables Tailored Built‐In Electric Fields in FeOCl/g‐C3N4 Heterojunctions for Enhanced Peroxymonosulfate Activation

open access: yesAdvanced Functional Materials, EarlyView.
Oxygen‐doping modulated g‐C3N4 support enables a strong built‐in electric field (BIEF) in FeOCl‐OCN.This enhanced BIEF induces the rearrangement of Fe(II)/Fe(III) in FeOCl, which subtly improves intermediates adsorption and also reduces the energy barrier of *O production, thereby achieving efficient PMS activation with 1O2 and Fe(IV)= O as the primary
Ying Zeng   +9 more
wiley   +1 more source

THE FIRST PLANETS: THE CRITICAL METALLICITY FOR PLANET FORMATION [PDF]

open access: yesThe Astrophysical Journal, 2012
12 pages, 5 figures; accepted for publication in ...
Jarrett L. Johnson, Hui Li
openaire   +3 more sources

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

Three-dimensional Interaction between a Planet and an Isothermal Gaseous Disk. III. Locally Isothermal Cases

open access: yesThe Astrophysical Journal
We performed linear calculations to determine the Type I planetary migration rate for 3D locally isothermal disks with radial temperature gradients. For 3D disks with radial temperature gradients, the linear wave equation has a divergent term of the ...
Hidekazu Tanaka, Kohei Okada
doaj   +1 more source

Planet formation around stars of various masses: Hot super-Earths [PDF]

open access: yes, 2008
We consider trends resulting from two formation mechanisms for short-period super-Earths: planet-planet scattering and migration. We model scenarios where these planets originate near the snow line in ``cold finger'' circumstellar disks. Low-mass planet-planet scattering excites planets to low periastron orbits only for lower mass stars.
arxiv   +1 more source

Active Learning‐Driven Discovery of Sub‐2 Nm High‐Entropy Nanocatalysts for Alkaline Water Splitting

open access: yesAdvanced Functional Materials, EarlyView.
High‐entropy nanoparticles (HENPs) hold great promise for electrocatalysis, yet optimizing their compositions remains challenging. This study employs active learning and Bayesian Optimization to accelerate the discovery of octonary HENPs for hydrogen and oxygen evolution reactions.
Sakthivel Perumal   +5 more
wiley   +1 more source

INSIDE-OUT PLANET FORMATION [PDF]

open access: yesThe Astrophysical Journal, 2013
The compact multi-transiting planet systems discovered by Kepler challenge planet formation theories. Formation in situ from disks with radial mass surface density, $ $, profiles similar to the minimum mass solar nebula (MMSN) but boosted in normalization by factors $\gtrsim 10$ has been suggested.
Sourav Chatterjee, Jonathan C. Tan
openaire   +4 more sources

Tetrahedral Tilting and Lithium‐Ion Transport in Halide Argyrodites Prepared by Rapid, Microwave‐Assisted Synthesis

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a rapid, microwave‐assisted synthetic method for halide argyrodite solid‐state electrolytes Li6PS5X${\rm Li}_6 {\rm PS}_5X$ (X=$X =$ Cl−${\rm Cl}^-$, Br−${\rm Br}^-$, I−${\rm I}^-$). Microwave synthesis increases S2−${\rm S}^{2-}$/X−$X^-$ site disorder and rotational disorder of the isolated PS43−${{\mathrm{PS}}_{4}}^{3 ...
Austin M. Shotwell   +4 more
wiley   +1 more source

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