Results 81 to 90 of about 22,702,715 (393)

The scattering of small bodies in planetary systems: constraints on the possible orbits of cometary material

, 2011
The scattering of small bodies by planets is an important dynamical process in planetary systems. We present an analytical model to describe this process using the simplifying assumption that each particle's dynamics is dominated by a single planet at a ...
A. Bonsor, Alcock, Backman, Barnes, Beichman, Bonsor, Booth, Chambers, Churcher, de Elía, Debes, di Sisto, Duncan, Duncan, Emel’yanenko, Farihi, Farihi, Farihi, Gaidos, Gladman, Gladman, Greaves, Gulbis, Gänsicke, Holman, Horner, Horner, Jura, Jura, Kalas, Kilic, Klein, Koester, Kuchner, Levison, Levison, Lykawka, M. C. Wyatt, Marois, Marois, Melis, Moerchen, Moons, Morbidelli, Morbidelli, Morbidelli, Murray, Nesvorný, Nesvorný, Raymond, Reidemeister, Smith, Song, Tiscareno, Tisserand, Tremaine, Villaver, von Hippel, Wisdom, Wyatt, Wyatt, Wyatt, Zuckerman   +62 more
core   +1 more source

A DETAILED ANALYSIS OF THE HD 73526 2:1 RESONANT PLANETARY SYSTEM [PDF]

, 2013
We present six years of new radial velocity data from the Anglo-Australian and Magellan Telescopes on the HD 73526 2:1 resonant planetary system. We investigate both Keplerian and dynamical (interacting) fits to these data, yielding four possible ...
R. Wittenmyer, Xianyu Tan, Xianyu Tan, M. Lee, J. Horner, C. Tinney, R. P. Butler, G. Salter, B. Carter, H. R. Jones, S. O’Toole, J. Bailey, Duncan J. Wright, J. Crane, S. Schectman, P. Arriagada, I. Thompson, D. Minniti, M. Díaz   +18 more
semanticscholar   +1 more source

Evolution of planetary systems in resonance [PDF]

Astronomy & Astrophysics, 2004
We study the time evolution of two protoplanets still embedded in a protoplanetary disk. The results of two different numerical approaches are presented and compared. In the first approach, the motion of the disk material is computed with viscous hydrodynamical simulations, and the planetary motion is determined by N-body calculations including exactly
Geoffrey Bryden, Jochen Peitz, Wilhelm Kley   +2 more
openaire   +3 more sources

In Situ Formation of a Melt‐Solid Interface Toward Stable Oxygen Reduction in Protonic Ceramic Fuel Cells

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng, Mengran Li, Vanessa K. Peterson, Rijia Lin, Anita D'Angelo, Olexandra Marenych, Anya Yago, Dominique Appadoo, Tianjiu Zhu, Muhammad Yazid Bin Zulkifli, Shuai Gao, Yuming Wu, Xiaohe Tian, Xiaoyang Du, Zhonghua Zhu   +14 more
wiley   +1 more source

No variations in transit times for Qatar-1 b

, 2015
The transiting hot Jupiter planet Qatar-1 b was presented to exhibit variations in transit times that could be of perturbative nature. A hot Jupiter with a planetary companion on a nearby orbit would constitute an unprecedented planetary configuration ...
Aceituno, F. J., Dimitrov, D., Errman, R., Fernández, M., Gilbert, H., Kitze, M., Maciejewski, G., Neuhäuser, R., Ohlert, J., Pannicke, A., Puchalski, D., Raetz, St., Schmidt, J. -G., Seeliger, M.   +13 more
core   +1 more source

POSSIBLE TRANSIT TIMING VARIATIONS OF THE TrES-3 PLANETARY SYSTEM [PDF]

, 2013
Five newly observed transit light curves of the TrES-3 planetary system are presented. Together with other light-curve data from the literature, 23 transit light curves in total, which cover an overall timescale of 911 epochs, have been analyzed through ...
I. Jiang, L. Yeh, Parijat Thakur, Yu-Ting Wu, Ping Chien, Yi-Ling Lin, Hong-Yu Chen, Juei-Hwa Hu, Zhao Sun, J. Ji   +9 more
semanticscholar   +1 more source

Ionic Liquid‐Based Reversible Metal Electrodeposition for Adaptive Radiative Thermoregulation Under Extreme Environments

Advanced Functional Materials, EarlyView.
A wideband tunable electrochromic device with dynamic thermal emissivity control is demonstrated. The system enables adaptive heat regulation via electrochemically modulated silver deposition, achieving efficient cooling and heating states. The flexible design ensures mechanical robustness under bending conditions, making it promising for portable and ...
Jiawei Liang, Chenxi Sui, Jiacheng Tian, Genesis Higueros, Ting‐Hsuan Chen, Ronghui Wu, Pei‐Jan Hung, Yang Deng, Natalie Rozman, Willie John Padilla, Po‐Chun Hsu   +10 more
wiley   +1 more source

Simulation of Contact Force of Fault Planetary Gear System based on Virtual Prototype Technology

Jixie chuandong, 2015
In order to obtain the changing pattern of contact force of fault planetary gear system,a dynamics model of fault planetary gear system is established and the computation method for contact force of gear meshing based on Hertz theory is also introduced ...
Xiang Ling, Chen Tao, Hu Silei
doaj  

Research on Kinematics and Efficiency Calculation of Binary Logic Planetary Gearbox Based on Graph Theory

Applied Sciences
In this paper, the graph theory model of the kinematics of the double internal meshing planetary gear is established by splitting the k value of the planetary gear, the system matrix of the dual-state logic planetary gear transmission is assembled, the ...
Qiang Zhang, Zhe Wu, Jingtao Shen, Suxiao Cui, Yanping Cui   +4 more
doaj   +1 more source

Planetary system disruption by Galactic perturbations to wide binary stars [PDF]

Nature, 2013
Nearly half the exoplanets found within binary star systems reside in very wide binaries with average stellar separations greater than 1,000 astronomical units (one astronomical unit (au) being the Earth–Sun distance), yet the influence of such distant ...
N. Kaib, S. Raymond, M. Duncan
semanticscholar   +1 more source