Results 61 to 70 of about 45,240 (301)

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

Advanced Functional Materials, EarlyView.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda, Jorge Cardenas‐Gamboa, Ding Pei, François Bertran, Leila Noohinejad, Snehashish Chatterjee, Changjiang Yi, Iñigo Robredo, Horst Borrmann, Maia G. Vergniory, Chandra Shekhar, Claudia Felser   +11 more
wiley   +1 more source

The Binary Fraction of B-type Runaway Stars from LAMOST DR8

The Astrophysical Journal
Runaway stars are defined as stars that depart from their birth clusters at high peculiar velocities. There are two main mechanisms for the formation of runaway stars, i.e., the binary-supernova scenario (BSS) and the dynamical ejection scenario (DES ...
Kun Chen, Yanjun Guo, Dengkai Jiang, Zhanwen Han, Xuefei Chen   +4 more
doaj   +1 more source

Synthesis and Electronic Structure of the Fractionally Occupied Double Perovskite EuTa2O6 with Ordered Europium Vacancies

Advanced Functional Materials, EarlyView.
Two‐dimensional electronic states are the foundation of modern semiconductor technology. Here, we report molecular‐beam epitaxy growth of fractional double perovskite, EuTa2O6. Reciprocal space mapping and transmission electron microscopy confirm a layered ordering of A‐site cations.
Tobias Schwaigert, Ali Barooni, Benjamin Gregory, Paul Malinowski, Anirudh Tenneti, Sonia Hasko, Brenan Palazzolo, Jeffrey W Hodgson, Brendan Faeth, Patrick M. Woodward, Kyle M. Shen, Andrej Singer, Maryam Ghazisaeidi, Salva Salmani‐Rezaie, Darrell G. Schlom, Kaveh Ahadi   +15 more
wiley   +1 more source

The Stellar Composition of the Star Formation Region CMa R1. II. Spectroscopic and Photometric Observations of 9 Young Stars

, 2001
We present new high and low resolution spectroscopic and photometric data of nine members of the young association CMa R1. All the stars have circumstellar dust at some distance as could be expected from their association with reflection nebulosity. Four
Blondel, P, De Winter, D, Djie, A, Ezhkova, O V, Grankin, K N, Shevchenko, V S, Tjin, H R E, Van den Ancker, M E   +7 more
core   +1 more source

Supraparticles Composed of Graphitic Carbon Nitride Nanoparticles and Silica‐Supported Horseradish Peroxidase as Customizable Hybrid Catalysts for Photo‐Biocatalytic Cascade Reactions in Continuous Flow

Advanced Functional Materials, EarlyView.
Herein presented supraparticles combine the nanoparticulate photocatalyst graphitic carbon nitride with the enzyme horseradish peroxidase, which is immobilized on silica nanoparticles. In an optimized compatibility range, both catalysts operate effectively within the hybrid supraparticles and catalyze a cascade reaction consisting of the photocatalytic
Bettina Herbig, Egzon Cermjani, Doris Hanselmann, Johannes Prieschl, Angelika Schmitt, Michael S. Moritz, Christian Papp, Greta Nölke, Stefano Di Fiore, Christoph Deckers, Thomas H. Rehm, Susanne Wintzheimer   +11 more
wiley   +1 more source

TYC 3340-2437-1: A Quadruple System with a Massive Star

The Astrophysical Journal
Hierarchical massive quadruple systems are ideal laboratories for examining the theories of star formation, dynamical evolution, and stellar evolution.
Jiao Li, Chao Liu, Changqing Luo, Bo Zhang, Jiang-Dan Li, Jia-Dong Li, Zhan-Wen Han, Xue-Fei Chen, Xiao-Bin Zhang, Lu-Qian Wang, Min Fang, Li-Feng Xing, Xi-Liang Zhang, Chichuan Jin   +13 more
doaj   +1 more source

Medium-resolution echelle spectroscopy of pulsating variables and exoplanet host stars with sub-meter telescopes [PDF]

, 2014
Here we present two of our interesting results obtained over the last 18 months from spectroscopic monitoring of binary pulsating stars and exoplanet host stars.
Cseh, B., Csák, B., Dózsa, Á., Jankovics, I., Kiss, L. L., Kovács, J., Szabados, L., Szabó, Gy. M.   +7 more
core   +1 more source

The Wolf-Rayet binaries of the nitrogen sequence in the Large Magellanic Cloud: spectroscopy, orbital analysis, formation, and evolution

, 2019
Massive Wolf-Rayet (WR) stars dominate the radiative and mechanical energy budget of galaxies and probe a critical phase in the evolution of massive stars prior to core-collapse.
Goetberg, Y., Hainich, R., Hamann, W. -R., Moffat, A. F. J., Oskinova, L. M., Ramachandran, V., Sablowski, D. P., Sana, H., Sander, A. A. C, Schnurr, O., Shenar, T., St-Louis, N., Todt, H, Vanbeveren, D.   +13 more
core   +1 more source

The Mass-Radius Relationship for Very Low Mass Stars: Four New Discoveries from the HATSouth Survey [PDF]

, 2013
We report the discovery of four transiting F-M binary systems with companions between 0.1-0.2 Msun in mass by the HATSouth survey. These systems have been characterised via a global analysis of the HATSouth discovery data, combined with high-resolution ...
Bakos, G. Á., Bayliss, D., Brahm, R., Ciceri, S., Csubry, Z., Csák, B., Espinoza, N., Hartman, J. D., Henning, T., Jordán, A., Mancini, L., Mohler-Fischer, M., Penev, K., Rabus, M., Schmidt, B., Suc, V., Tan, T. G., Zhou, G.   +17 more
core   +3 more sources

Harnessing Non‐Covalent Protein–Protein Interaction Domains for Production of Biocatalytic Materials Systems

Advanced Functional Materials, EarlyView.
Non‐covalent protein–protein interactions mediated by SH3, PDZ, or GBD domains enable the self‐assembly of stable and biocatalytically active hydrogel materials. These soft materials can be processed into monodisperse foams that, once dried, exhibit enhanced mechanical stability and activity and are easily integrated into microstructured flow ...
Julian S. Hertel, Maria Alessandra Martini, Marius Stoeckle, Annika J. Weber, Kersten S. Rabe, Christof M. Niemeyer   +5 more
wiley   +1 more source