Results 91 to 100 of about 113,078 (269)

A Volume-limited Sample of Ultracool Dwarfs. II. The Substellar Age and Mass Functions in the Solar Neighborhood

The Astrophysical Journal
We present the most precise constraints to date for the mass and age distributions of single ultracool dwarfs in the solar neighborhood, based on an updated volume-limited sample of 504 L, T, and Y dwarfs within 25 pc.
William M. J. Best, Aniket Sanghi, Michael C. Liu, Eugene A. Magnier, Trent J. Dupuy   +4 more
doaj   +1 more source

Dynamical condition of neutral hydrogen envelopes of dwarf galaxies and their possible morphological evolution [PDF]

, 2002
We investigate the star-formation history of gas-rich dwarf galaxies, taking account of the dynamical evolution of their neutral hydrogen (H{\sc i}) envelope. Gas-rich dwarfs are classified into blue compact dwarfs (BCDs) and dwarf irregulars (dIrrs). In this paper, their H{\sc i} envelope is clearly shown not to be blown away by their stellar feedback.
arxiv   +1 more source

Y-linked Mendelian inheritance of giant and dwarf male morphs in shell-brooding cichlids [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2014
Behavioural variation among conspecifics is typically contingent on individual state or environmental conditions. Sex-specific genetic polymorphisms are enigmatic because they lack conditionality, and genes causing adaptive trait variation in one sex may reduce Darwinian fitness in the other.
Sabine Wirtz Ocana, Patrick Meidl, Danielle Bonfils, Michael Taborsky   +3 more
openaire   +4 more sources

High Proton Conductivity in xCuO/(1‐x)CeO2 Electrolytes Induced by CuO Self‐Nucleation and Electron‐Ion Coupling

Advanced Science, EarlyView.
This study discovers electron‐ion (E‐I) coupling in xCuO/(1‐x)CeO2(CCO), (x = 0–0.4) membranes, achieving ionic conductivity >0.15 S cm−1, with activation energy 0.28 eV and generated peak power density 900 mW cm−2 at 550 °C. Interfacial charge distribution and build‐in electric field enhanced ion transport entirely advanced the LT‐SOFC technology for ...
Muhammad Shahid Sharif, Sajid Rauf, Zuhra Tayyab, Muhammad Ahsan Masood, Yibin Tian, Muhammad Ali Kamran Yousaf Shah, Abdullah N. Alodhayb, Rizwan Raza, Bin Zhu   +8 more
wiley   +1 more source

The Sonora Substellar Atmosphere Models. IV. Elf Owl: Atmospheric Mixing and Chemical Disequilibrium with Varying Metallicity and C/O Ratios

The Astrophysical Journal
Disequilibrium chemistry due to vertical mixing in the atmospheres of many brown dwarfs and giant exoplanets is well established. Atmosphere models for these objects typically parameterize mixing with the highly uncertain K _zz diffusion parameter.
Sagnick Mukherjee, Jonathan J. Fortney, Caroline V. Morley, Natasha E. Batalha, Mark S. Marley, Theodora Karalidi, Channon Visscher, Roxana Lupu, Richard Freedman, Ehsan Gharib-Nezhad   +9 more
doaj   +1 more source

¿Los cipreses creen en Dios? Acerca de Garbancito de la Mancha (Arturo Moreno, 1945)

Con A de Animación, 2012
<p>Se describen las excepcionales circunstancias que rodearon la producción de <em>Garbancito de La Mancha </em>(1941), primer largometraje de animación en color europeo, y analiza tanto la contaminación en el film de las ideologías ...
Alejandro Montiel
doaj   +1 more source

Multiple Stellar Populations in Metal-poor Globular Clusters with JWST: A NIRCam View of M92

The Astrophysical Journal, 2023
Recent work on metal-intermediate globular clusters (GCs) with [Fe/H] = −1.5 and −0.75 has illustrated the theoretical behavior of multiple populations in photometric diagrams obtained with the JWST.
Tuila Ziliotto, Antonino Milone, Anna F. Marino, Aaron L. Dotter, Alvio Renzini, Enrico Vesperini, Amanda Karakas, Giacomo Cordoni, Emanuele Dondoglio, Maria V. Legnardi, Edoardo P. Lagioia, Anjana Mohandasan, Sarah Baimukhametova   +12 more
doaj   +1 more source

Resistance Drift of Phase Change Materials Beyond the Power Law

Advanced Electronic Materials, EarlyView.
The timedependent resistance of phase change materials is important for their application as electronic memory. Here, resistance measurements of melt‐quenched germanium telluride from nanoseconds to minutes are presented. By going far beyond the usually considered measurement regime, deviations from the ubiquitous power law behavior are observed, that ...
Jakob Ballmaier, Sebastian Walfort, Martin Salinga   +2 more
wiley   +1 more source

Isotope Techniques in Chemical Wastewater Treatment: Opportunities and Uncertainties

Angewandte Chemie, EarlyView.
In this review, we would first introduce basic knowledge about isotopic compounds and then scrutinize the physical and chemical influence induced by isotope changes. Special attention will be paid to the uncertainties in explaining the isotope results.
Hongyu Zhou, Xiaoguang Duan, Bingkun Huang, Shuang Zhong, Cheng Cheng, Virender K. Sharma, Shaobin Wang, Bo Lai   +7 more
wiley   +2 more sources

Modeling the Chemical Enrichment History of the Bulge Fossil Fragment Terzan 5

The Astrophysical Journal, 2023
Terzan 5 is a heavily obscured stellar system located in the inner Galaxy. It has been postulated to be a stellar relic, a bulge fossil fragment witnessing the complex history of the assembly of the Milky Way bulge.
Donatella Romano, Francesco R. Ferraro, Livia Origlia, Simon Portegies Zwart, Barbara Lanzoni, Chiara Crociati, Davide Massari, Emanuele Dalessandro, Alessio Mucciarelli, R. Michael Rich, Francesco Calura, Francesca Matteucci   +11 more
doaj   +1 more source