Results 91 to 100 of about 114,517 (388)

A magnetic white dwarf in a detached eclipsing binary [PDF]

, 2013
SDSS J030308.35+005444.1 is a close, detached, eclipsing white dwarf plus M dwarf binary which shows a large infrared excess which has been interpreted in terms of a circumbinary dust disc.
Applegate, Araujo-Betancor, B. T. Gänsicke, Backhaus, Beuermann, Beuermann, Brinkworth, Burleigh, Campbell, Campbell, Claret, Copperwheat, Copperwheat, D'Odorico, Davis, Debes, Debes, Dhillon, Dobbie, Dobbie, Faulkner, Feiden, Ferrario, Ferrario, Ferrario, Ferrario, Friedrich, Gianninas, Greenstein, Gänsicke, Gänsicke, Kafka, Kafka, Kissler-Patig, Kraft, Külebi, Külebi, Li, Liebert, Liebert, Lubow, M. C. P. Bours, M. R. Schreiber, Marsh, Matranga, Maxted, Morales, O'Donoghue, Parsons, Parsons, Parsons, Parsons, Parsons, Potter, Pretorius, Pyrzas, Pyrzas, Rappaport, Rebassa-Mansergas, Rebassa-Mansergas, Reimers, Reimers, Ribeiro, S. G. Parsons, S. P. Littlefair, Schmidt, Schmidt, Schreiber, Schwope, Schwope, Silvestri, Silvestri, Smith, Steeghs, Stockman, T. R. Marsh, Tappert, Terrien, Tout, V. S. Dhillon, Verbunt, Vogel, Vogel, Watson, Wickramasinghe, Wickramasinghe, Zorotovic   +86 more
core   +3 more sources

Insect I‐Type Lysozymes Function as Antiviral Proteases by Forming Biomolecular Condensates

Advanced Science, EarlyView.
Upon rice viral infection, the insect vector activates the Toll–MyD88–Dorsal signaling cascade, inducing i‐type lysozyme (Lyz‐I1) expression. Lyz‐I1 functions as an antiviral protease through its conserved catalytic dyad Glu/Asp (E/D), mediating cleavage of viral proteins at specific Lys (K) residues.
Yu Du, Yuqing Xiao, Manman Hu, Jinhua Yang, You Li, Taiyun Wei   +5 more
wiley   +1 more source

A Dynamical Model for IRAS 00500+6713: The Remnant of a Type Iax Supernova SN 1181 Hosting a Double Degenerate Merger Product WD J005311

The Astrophysical Journal
IRAS 00500+6713 is a hypothesized remnant of a Type Iax supernova SN 1181. Multiwavelength observations have revealed its complicated morphology; a dusty infrared ring is sandwiched by the inner and outer X-ray nebulae. We analyze the archival X-ray data
Takatoshi Ko, Hiromasa Suzuki, Kazumi Kashiyama, Hiroyuki Uchida, Takaaki Tanaka, Daichi Tsuna, Kotaro Fujisawa, Aya Bamba, Toshikazu Shigeyama   +8 more
doaj   +1 more source

Unraveling Alkali Ion Electron Donation for Enhancing Heterogeneous Catalytic Oxidation

Advanced Science, EarlyView.
A new mechanistic pathway for potassium (K) ions as electron donors is identified by constructing single K ion chains confined within hexagonal WO3 tunnels. The as‐produced high‐electron‐density Kδ+ (0<δ<1) ions not only facilitate the formation of oxygen vacancies that behave classical electronic effect but, more importantly, also directly donate ...
Jin Wang, Zhenghui Zhang, Xianqiu Song, Rong Wang, Ying Xin, Yexin Zhang, Zhaoliang Zhang   +6 more
wiley   +1 more source

Disk or Companion: Characterizing Excess Infrared Flux in Seven White Dwarf Systems with Near-infrared Spectroscopy

The Astronomical Journal, 2023
Excess infrared flux from white dwarf stars is likely to arise from a dusty debris disk or a cool companion. In this work, we present near-infrared spectroscopic observations with Keck/MOSFIRE, Gemini/GNIRS, and Gemini/Flamingos-2 of seven white dwarfs ...
Dylan Owens, Siyi Xu, Elena Manjavacas, S. K. Leggett, S. L. Casewell, Erik Dennihy, Patrick Dufour, Beth L. Klein, Sherry Yeh, B. Zuckerman   +9 more
doaj   +1 more source

Limits on the Halo White Dwarf Component of Baryonic Dark Matter from the {\em Hubble Deep Field} [PDF]

, 1996
The MACHO collaboration lensing event statistics suggest that a significant fraction of the dark galactic halo can be comprised of baryonic matter in the form of white dwarf stars with masses between 0.1 and 1.0 \Msun . Such a halo white dwarf population,
Bennett D., Mestel L., Steven D. Kawaler, Williams R.   +3 more
core   +3 more sources

Asteroseismology of white dwarf stars [PDF]

Highlights of Astronomy, 1995
Perhaps the hardest scientific problems to solve are those most scientists believe have already been solved, but which have not. Any model we make of an astronomical process is doomed to be incomplete at some level; the “broad-brush” picture of stellar structure and evolution is often accepted as a solved problem, but in fact many discrepancies exist ...
openaire   +2 more sources

Magnetic white dwarf stars in the Sloan Digital Sky Survey [PDF]

, 2012
To obtain better statistics on the occurrence of magnetism among white dwarfs, we searched the spectra of the hydrogen atmosphere white dwarf stars (DAs) in the Data Release 7 of the Sloan Digital Sky Survey (SDSS) for Zeeman splittings and estimated the
S. O. Kepler, I. Pelisoli, S. Jordan, S. Kleinman, B. Kulebi, D. Koester, Viviane Peccanha, B. Castanheira, A. Nitta, J. E. S. Costa, D. Winget, A. Kanaan, L. Fraga   +12 more
semanticscholar   +1 more source

Mechanistic Insights into Ionic Conduction in Lead Halide Perovskites and Perovskite‐Inspired Materials

Advanced Energy Materials, EarlyView.
This study provides mechanistic insights into ionic conduction in lead halide perovskites (LHPs) and perovskite‐inspired materials (PIMs). By comparing ionic conduction in PIMs with the well‐studied LHPs, correlations are established between ionic transport, anomalous device kinetics, and operational stability.
Ramesh Kumar, Bhavya Rakheja, Noora Lamminen, Francesca Fasulo, Miguel Angel Torre Cachafeiro, Chintam Hanmandlu, G. Krishnamurthy Grandhi, Monojit Bag, Ana Belén Muñoz‐García, Gerrit Boschloo, Wolfgang Tress, Michele Pavone, Paola Vivo, Erik M. J. Johansson   +13 more
wiley   +1 more source

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

, 2022
Hepatology, EarlyView.
Robert J. Fontana, Iris Liou, Adrian Reuben, Ayako Suzuki, M. Isabel Fiel, William Lee, Victor Navarro   +6 more
wiley   +1 more source