Results 71 to 80 of about 241,099 (282)

On the Impact Origin of Phobos and Deimos I: Thermodynamic and Physical Aspects

, 2017
Phobos and Deimos are the two small moons of Mars. Recent works have shown that they can accrete within an impact-generated disk. However, the detailed structure and initial thermodynamic properties of the disk are poorly understood.
Charnoz, Sébastien, Genda, Hidenori, Hyodo, Ryuki, Rosenblatt, Pascal   +3 more
core   +2 more sources

The brown dwarf desert as a consequence of orbital migration [PDF]

, 2001
We show that the dearth of brown dwarfs in short-period orbits around Solar-mass stars - the brown dwarf desert - can be understood as a consequence of inward migration within an evolving protoplanetary disc.
Armitage, Armitage, Artymowicz, Basu, Bonnell, Bouvier, Bryden, Béjar, Clarke, Duquennoy, Gizis, Goldreich, Gould, Haisch, Halbwachs, Hartmann, Ian A. Bonnell, Johnstone, Kirkpatrick, Kirkpatrick, Königl, Lin, Lin, Lin, Marcy, Marcy, Martín, Osterloh, Papaloizou, Philip J. Armitage, Reipurth, Reipurth, Shu, Stassun, Syer, Taam, Trilling, Trilling   +37 more
core   +3 more sources

Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films

Advanced Functional Materials, EarlyView.
The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram, Sophie Meißner, Stephan Kümmel   +2 more
wiley   +1 more source

The JCMT BISTRO Survey: Magnetic Fields Align with Orbital Structure in the Galactic Center

The Astrophysical Journal Letters
We present the magnetic field in the dense material of the Central Molecular Zone (CMZ) of the Milky Way, traced in 850 μ m polarized dust emission as part of the James Clerk Maxwell Telescope B -fields in STar-forming Region Observations survey.
Janik Karoly, Derek Ward-Thompson, Kate Pattle, Steven N. Longmore, James Di Francesco, Anthony Whitworth, Doug Johnstone, Sarah Sadavoy, Patrick M. Koch, Meng-Zhe Yang, Ray Furuya, Xing Lu, Motohide Tamura, Victor P. Debattista, David Eden, Jihye Hwang, Frédérick Poidevin, Bijas N., Szu-Ting Chen, Eun Jung Chung, Simon Coudé, Sheng-Jun Lin, Yasuo Doi, Takashi Onaka, Lapo Fanciullo, Tie Liu, Guangxing Li, Pierre Bastien, Tetsuo Hasegawa, Woojin Kwon, Shih-Ping Lai, Keping Qiu   +31 more
doaj   +1 more source

The Formation of Planets

, 1999
This paper reviews the dynamics of the growth of solid particles from micron-sized dust grains to planets in protostellar accretion disks.
Ruden, Steven P.
core   +2 more sources

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Research of Forming Trajectory of Multi-branches Rose Curve of Double Eccentric Sets Transmission for Orbital Forming Press Head

Jixie chuandong, 2017
The vector motion model is built to study the trajectory tracking of the orbital forming press head,the motion trajectory of the orbital head with different speed and direction is simulated by using MATLAB software,the motion trajectory is multi ...
Gong Xiaotao, Geng Pei
doaj  

Orbital migration and the frequency of giant planet formation [PDF]

, 2002
We present a statistical study of the post-formation migration of giant planets in a range of initial disk conditions. For given initial conditions we model the evolution of giant planet orbits under the influence of disk, stellar, and mass loss torques.
Armitage, Boss, Boss, Boss, Boss, Bryden, Bryden, Burrows, Butler, Butler, Butler, Butler, Butler, Carpenter, Charbonneau, Chiang, Cochran, D'Angelo, D. E. Trilling, Del Popolo, Delfosse, Fischer, Gatewood, Goldreich, Greaves, Guillot, Halbwachs, Han, Hartmann, Hatzes, Henry, J. I. Lunine, Kley, Kley, Kley, Kortenkamp, Laughlin, Lin, Lin, Lissauer, Marcy, Marcy, Marcy, Marcy, Marcy, Mayor, Mazeh, McGrath, Murray, Murray, Nelson, Noyes, Papaloizou, Papaloizou, Pepe, Pourbaix, Pourbaix, Quillen, Quillen, Santos, Santos, Shakura, Stevenson, Takeuchi, Tanaka, Thommes, Trilling, Trilling, Trilling, Trilling, Vogt, Vogt, W. Benz, Ward, Ward, Ward, Weidenschilling, Zucker, Zucker, Zucker, Zucker, Zuckerman   +81 more
core   +2 more sources

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

The Common Envelope Evolution Outcome. II. Short-orbital-period Hot Subdwarf B Binaries Reveal a Clear Picture

The Astrophysical Journal
Common envelope evolution (CEE) is vital for forming short-orbital-period compact binaries. It covers many objects, such as double compact merging binaries, Type Ia supernovae progenitors, binary pulsars, and X-ray binaries.
Hongwei Ge, Christopher A Tout, Ronald F Webbink, Xuefei Chen, Arnab Sarkar, Jiao Li, Zhenwei Li, Lifu Zhang, Zhanwen Han   +8 more
doaj   +1 more source