Results 131 to 140 of about 35,614 (300)

Observational constraints on dust disk lifetimes : implications for planet formation [PDF]

, 2008
Thus far our impressions regarding the evolutionary time scales for young circumstellar disks have been based on small number statistics. Over the past decade, however, in addition to preci- sion study of individual star/disk systems, substantial ...
Hillenbrand, L.A.
core  

Evidence for Evolution Among Primordial Disks in the 5 Myr Old Upper Scorpius OB Association

, 2010
Moderate-resolution, near-infrared spectra between 0.8 and 5.2 microns were obtained for 12 late-type (K0-M3) disk-bearing members of the ~5 Myr old Upper Scorpius OB association using SpeX on the NASA Infrared Telescope Facility.
Blaauw, Calvet, Carpenter, Carpenter, Cieza, Currie, D'Alessio, Dahm, Dahm, de Zeeuw, Furlan, Gullbring, Haisch, Hartmann, Hernandez, Ireland, Kraus, Kunkel, Köhler, Lada, Luhman, Mamajek, Metchev, Muzerolle, Muzerolle, Muzerolle, Preibisch, Preibisch, Preibisch, Rayner, Robitaille, Robitaille, S. E. Dahm, Siess, Silverstone, Uchida, White   +36 more
core   +1 more source

Regionally Localized Electrolyte Engineering via UV Crosslinking for Stable Ether–Carbonate Lithium Metal Batteries

Advanced Functional Materials, EarlyView.
This work introduces a regionally localized electrolyte (RLE) that spatially separates ether‐ and carbonate‐based functions to stabilize both Li metal and high‐voltage cathodes. An immobilized ether‐rich layer directs Li+ transport, activates LiNO3 locally, and forms a uniform LiF‐rich SEI, enabling lower overpotential, uniform deposition, and long ...
Eunbin Lim, Jeanie Pearl Dizon Suba, Jaegu Cho, Sukeun Yoon, Kuk Young Cho   +4 more
wiley   +1 more source

Different Influence of Gas Accretion on the Evolution of Star-forming and Non-star-forming Galaxies

The Astrophysical Journal
Using integral field spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory survey, we investigate the spatially resolved properties and empirical relations of a star-forming galaxy and a non-star-forming galaxy hosting ...
Min Bao, Wenlong Zhao, Qirong Yuan
doaj   +1 more source

Time-Evolution of Viscous Circumstellar Disks due to Photoevaporation by FUV, EUV and X-ray Radiation from the Central Star

, 2009
We present the time evolution of viscously accreting circumstellar disks as they are irradiated by ultraviolet and X-ray photons from a low-mass central star. Our model is a hybrid of a 1D time-dependent viscous disk model coupled to a 1+1D disk vertical
Adams, Alexander, Alexander, Andrews, Andrews, Andrews, Bally, Bergin, Beygelzimer, Bouret, C. P. Dullemond, Calvet, Calvet, Chiang, Cieza, Clarke, Currie, D. Hollenbach, Dullemond, Dullemond, Dullemond, Ercolano, Ercolano, Feigelson, Feigelson, Flaccomio, Font, Getman, Gorti, Gorti, Goto, Gregory, Güdel, Haisch, Hartmann, Hartmann, Herczeg, Hernández, Hillenbrand, Hollenbach, Hollenbach, Johnstone, Johnstone, Kastner, Lynden-Bell, Mohanty, Muzerolle, Muzerolle, Padoan, Parravano, Pascucci, Preibisch, Preibisch, Richling, Richling, Richling, Shakura, Shakura, Shang, Shepard, Shu, Sicilia-Aguilar, Siess, Stone, Störzer, U. Gorti, Valenti, Vorobyov, White, Wilms   +69 more
core   +1 more source

Revealing the Hidden Role of Cd in p‐Type Mg3Sb2: Enhanced Thermoelectric Performance by Grain Boundary Segregation Engineering

Advanced Functional Materials, EarlyView.
The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li, Deming Dong, Xiaoyu Yang, Jun Qian, Mengruizhe Kong, Han Wan, Ni Ma, Wei Bai, Pengfei Nan, Binghui Ge, Jiming Song, G. Jeffrey Snyder, Yuan Yu   +12 more
wiley   +1 more source

Residual‐Lithium‐to‐LiF Conversion Enables a LiF–Fluorinated Carbon Interphase for Reconstruction‐Resistant Ni‐Rich Cathodes

Advanced Functional Materials, EarlyView.
A fluorine‐rich acrylate monomer (PFHEA) was solvent‐free applied to NCM90 and thermally decomposed under Ar to convert residual lithium into LiF and form a pre‐built LiF/fluorinated amorphous carbon (LiF/FC) interphase. The LiF/FC layer suppresses NiO rock‐salt reconstruction and microcrack propagation, lowers interfacial resistance, and improves Li ...
Pangyu Kim, Juyeon Han, Junhyeok Kim, Younghoon Kim, Eunha Seo, Dain Kim, Jeeyoung Yoo   +6 more
wiley   +1 more source

A Solution to the Protostellar Accretion Problem

, 2005
Accretion rates of order 10^-8 M_\odot/yr are observed in young protostars of approximately a solar mass with evidence of circumstellar disks. The accretion rate is significantly lower for protostars of smaller mass, approximately proportional to the ...
Alexei Kritsuk, Bondi H., Bondi H., Edgar R., Michael L. Norman, Paolo Padoan, Ruffert M., Ruffert M., Ruffert M., Åke Nordlund   +9 more
core   +2 more sources

Modular Control of PEG‐Poly(2‐Oxazoline) Co‐Assembly Enables Tunable Aggregate Properties for Intraocular Pressure Management

Advanced Healthcare Materials, EarlyView.
A thermo‐responsive poly(2‐oxazoline)‐based injectable formulation is developed to modulate intraocular pressure (IOP) in both normal and hypotonic eyes. By adjusting the PEG content, the aggregation behavior is finely tuned, enabling IOP elevation without long‐term deposition.
Yuji Tanaka, Shohei Morikawa, Shigehito Osawa   +2 more
wiley   +1 more source

Spin–Orbit Alignment in Merging Binary Black Holes Following Collisions with Massive Stars

The Astrophysical Journal Letters
Merging binary black holes (BBHs) formed dynamically in dense star clusters are expected to have uncorrelated spin–orbit orientations since they are assembled through many random interactions.
Fulya Kıroğlu, James C. Lombardi Jr., Kyle Kremer, Hans D. Vanderzyden, Frederic A. Rasio   +4 more
doaj   +1 more source