Results 91 to 100 of about 299,702 (321)

Dusty Planetary Systems

, 2012
Extensive photometric stellar surveys show that many main sequence stars show emission at infrared and longer wavelengths that is in excess of the stellar photosphere; this emission is thought to arise from circumstellar dust.
A Moro-Martín, A Moro-Martín, A Moro-Martín, A Moro-Martín, A Moro-Martín, A Moro-Martín, A Moro-Martín, A-M Lagrange, AC Quillen, AV Krivov, AV Krivov, BAS Gustafson, C Dominik, C Eiroa, C Lovis, C Vitense, CA Beichman, CA Beichman, CC Stark, CD Murray, CF Chyba, CH Chen, CM Lisse, CR Chapman, D Brownlee, D Jewitt, D Jewitt, D Mouillet, DA Fischer, DA Gurnett, DE Backman, DE Trilling, E Chiang, E Grün, EK Jessberger, FY Morales, G Bryden, G Bryden, G Decin, G Marcy, G Schneider, GH Rieke, GM Bernstein, HA Zook, HH Aumann, HJ Habing, J Wisdom, J-C Liou, JA Burns, JC Weingartner, JE Krist, JH Debes, JM Carpenter, JR Houck, JS Dohnanyi, JS Greaves, JS Greaves, JS Greaves, JS Greaves, JS Mathis, KA Farley, KD McKeegan, KR Stapelfeldt, KY L Su, KY L Su, LA Hillenbrand, M Booth, M Clampin, M Jura, M Jura, M Landgraf, MC Wyatt, MC Wyatt, MC Wyatt, MC Wyatt, MC Wyatt, ME Zolensky, MF A’Hearn, MR Meyer, MV Sykes, N Siegler, P Kalas, P Kalas, P Kalas, P Plavchan, P Thébault, PC Frisch, R Gomes, R Malhotra, RG Strom, S Müller, S Yamamoto, SA Sandford, SA Stern, SF Dermott, SJ Kenyon, SN Raymond, T Löhne, TN Gautier III, W Benz, WF Bottke, WS Holland, WS Holland, WT Reach, WT Reach, ZM Leinhardt, Á Kóspál   +106 more
core   +1 more source

Super-Earth Formation with Slow Migration from a Ring in an Evolving Peaked Disk Compatible with Terrestrial Planet Formation

The Astrophysical Journal
For the origin of the radially concentrated solar system’s terrestrial planets, planet formation from a ring of solids at about 1 au from the Sun with convergent/suppressed type I migration is preferred.
Masahiro Ogihara, Alessandro Morbidelli, Masanobu Kunitomo   +2 more
doaj   +1 more source

Milankovitch cycles in Banded Iron Formations

, 2022
The astronomical theory of climate change resulting from quasi-periodic variations in the Earth’s orbit and spin axis (Milankovitch forcing) is now widely accepted for the Phanerozoic, the most recent ~0.5 billion years of Earth history. However, much older, Precambrian intervals remain largely unexplored.
openaire   +3 more sources

High‐Entropy Liquid Metal Process for Transparent Ultrathin p‐Type Gallium Oxide

Advanced Functional Materials, EarlyView.
This work introduces a doping strategy for harvesting ultrathin Ga oxide layers using a multi‐elemental Ga‐based liquid metal alloy. The incorporation of trivalent In metal into the self‐limiting oxide formed on the alloy's surface is enabled by the existence of atomically dispersed Pt, Au, and Pd.
Laetitia Bardet, Ali Zavabeti, Amar Salih, Dawei Zhang, Mohamed Kilani, Mohammad B. Ghasemian, Anton Tadich, Yunlong Sun, Lucy Johnston, Danyang Wang, Jan Seidel, Francois‐Marie Allioux, Cuong Ton‐That, Jianbo Tang, Kourosh Kalantar‐Zadeh   +14 more
wiley   +1 more source

Triggered Star Formation Inside the Shell of a Wolf-Rayet Bubble as the origin of the Solar System

, 2017
A critical constraint on solar system formation is the high $^{26}$Al/$^{27}$Al abundance ratio of 5 $\times 10^{-5}$ at the time of formation, which was about 17 times higher than the average Galactic ratio, while the $^{60}$Fe/$^{56}$Fe value was about
Bojazi, Michael, Boyajian, Peter, Dauphas, Nicolas, Dwarkadas, Vikram V., Meyer, Bradley   +4 more
core   +1 more source

Recurrent planetesimal formation in an outer part of the early solar system

Scientific Reports
The formation of planets in our solar system encompassed various stages of accretion of planetesimals that formed in the protoplanetary disk within the first few million years at different distances to the sun.
Wladimir Neumann, Ning Ma, Audrey Bouvier, Mario Trieloff   +3 more
doaj   +1 more source

Self‐Poled Halide Perovskite Ruddlesden‐Popper Ferroelectric‐Photovoltaic Semiconductor Thin Films and Their Energy Harvesting Properties

Advanced Functional Materials, EarlyView.
Low‐dimensional halide perovskite thin films, (BA)2(MA)n‐1PbnBr3n+1 (n = 1, 2), exhibit both semiconducting and ferroelectric properties, enabling mechanical and light energy harvesting. Using Cr/Cr₂O₃ or PCBM as barrier layers ensures reproducible ferroelectricity.
Raja Sekhar Muddam, Shaoyang Wang, Nirmal Prashanth Maria Joseph Raj, Qingping Wang, Philip Wijesinghe, Julia Payne, Matthew S. Dyer, Chris Bowen, Lethy Krishnan Jagadamma   +8 more
wiley   +1 more source

Numerical two-dimensional calculations of the formation of the solar nebula [PDF]

Numerical two dimensional calculations of the formation of the solar nebula are presented. The following subject areas are covered: (1) observational constraints of the properties of the initial solar nebula; (2) the physical problem; (3) review if two ...
Bodenheimer, Peter H.
core   +1 more source

Dynamics of the Kuiper Belt [PDF]

, 1999
Our current knowledge of the dynamical structure of the Kuiper Belt is reviewed here. Numerical results on long term orbital evolution and dynamical mechanisms underlying the transport of objects out of the Kuiper Belt are discussed.
Duncan, M., Levison, H., Malhotra, R.
core   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source