Results 91 to 100 of about 21,151,583 (337)

Scattering of Giant Planets and Implications for the Origin of the Hierarchical and Eccentric Two-planet System GJ 1148

open access: yesThe Astrophysical Journal
The GJ 1148 system has two Saturn-mass planets orbiting around an M dwarf star on hierarchical and eccentric orbits, with orbital period ratio of 13 and eccentricities of both planets of 0.375. The inner planet is in the regime of eccentric warm Jupiters.
Longhui Yuan, Man Hoi Lee
doaj   +1 more source

The Evolution and Delivery of Rocky Extra-Solar Materials to White Dwarfs [PDF]

open access: yesReviews in Mineralogy & Geochemistry
Understanding stellar evolution and its effect on planetary systems is crucial for correctly interpreting the chemical constraints of exo-planetary material that can be given to us by white dwarfs.
Dimitri Veras, A. Mustill, A. Bonsor
semanticscholar   +1 more source

Experimental cosmochemistry in the space station : report of workshops September 12-13, 1985 and February 24-25, 1986. [PDF]

open access: yes, 1986
The scientific discussions focused on two general areas of research: chemical and physical processes in the earliest history of the general areas of research, and general principles of magmatic process applicable both to planetary formation and evolution,

core  

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

open access: yesAdvanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti   +11 more
wiley   +1 more source

Dynamical Evolution of Planetary Systems

open access: yes
This is a preprint of the following work: Dynamical Evolution of Planetary Systems by A. C. Petit et al. (updating the chapter originally written by A. Morbidelli) in Deeg and Belmonte, Handbook of Exoplanets, 2nd edition, 2025, Springer Nature Switzerland AG, reproduced with permission of Springer Nature Switzerland ...
Petit, Antoine   +3 more
openaire   +3 more sources

N-body Simulations of the Self-confinement of Viscous Self-gravitating Narrow Eccentric Planetary Ringlets

open access: yesThe Astrophysical Journal
Narrow eccentric planetary ringlets have sharp edges, sizable eccentricity gradients, and a confinement mechanism that prevents radial spreading due to ring viscosity.
Joseph M. Hahn   +3 more
doaj   +1 more source

Long-period comet flux in the planetary region: Dynamical evolution from the Oort cloud

open access: yes, 2007
This study analyzes the evolution of 2 × 105 orbits with initial parameters corresponding to the orbits of comets of the Oort cloud under the action of planetary, galactic, and stellar perturbations over 2 × 109 years.
Mazeeva O.A.
core   +1 more source

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

open access: yesAdvanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair   +3 more
wiley   +1 more source

ORCHARD: A General Planetary Evolution Code

open access: yesThe Astrophysical Journal
We present ORCHARD , a publicly available planetary evolution code based on the gas giant evolution code, APPLE , capable of modeling the evolution and structures of terrestrial, super-Earth, sub-Neptune, Neptune, and gas giant planets and exoplanets ...
Roberto Tejada Arevalo   +3 more
doaj   +1 more source

Progress in the study of typical planetary landforms over the past 30 years: a bibliometric analysis in CiteSpace

open access: yesFrontiers in Astronomy and Space Sciences
Landform investigation reports are fundamental datasets for ecology, geology, and geography as they record the morphological traces of planetary surface processes, which have been the focus of top journals and distinguished scholars.
Yutong Zhang   +5 more
doaj   +1 more source

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