Results 51 to 60 of about 665,153 (306)

The Thousand Asteroid Light Curve Survey [PDF]

Icarus, 2009
We present the results of our Thousand Asteroid Light Curve Survey (TALCS) conducted with the Canada-France-Hawaii Telescope in September 2006. Our untargeted survey detected 828 Main Belt asteroids to a limiting magnitude of g'~22.5 corresponding to a diameter range of 0.4 km <= D <= 10 km.
Masiero, Joseph, Jedicke, Robert, Ďurech, Josef, Gwyn, Stephen, Denneau, Larry, Larsen, Jeff   +5 more
openaire   +3 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Archival Gravitational-Wave Optical Transient Observer Photometry and Zwicky Transient Facility Localization of Galactic Novae: Quiescent Constraints and Improved Coordinates

Universe
We present archival photometry from the Gravitational-wave Optical Transient Observer (GOTO) for four Galactic novae discovered between 2017 and 2024, spanning some of the faintest ZTF24aaomlxy and PGIR22akgylf (at a marginal near-limit level consistent ...
Sutharut Khamrat, Farung Surina, Kanthanakorn Noysena, Kendall Ackley, Martin J. Dyer, Joe Lyman, Krzysztof Ulaczyk, Sergey Belkin, Duncan K. Galloway, Vik S. Dhillon, Paul O’Brien, Gavin Ramsay, Rubina Kotak, Rene P. Breton, Laura K. Nuttall, Ben Gompertz, Jorge Casares, Paul Chote, Ashley Chrimes, Deanne Coppejans, Rob Eyles-Ferris, Ben Godson, Dan Jarvis, Lisa Kelsey, Mark Kennedy, Tom Killestein, Andrew Levan, Soheb Mandhai, Seppo Mattila, Kangming Pu, Anwesha Sahu, Elizabeth Stanway, Rhaana Starling, Yuzhu Sun   +33 more
doaj   +1 more source

Light Curves and Polarizations of Gravitationally Lensed Kilonovae

The Astrophysical Journal, 2023
Kilonovae are generally believed to originate from the ejecta of binary neutron stars (NSs) or black hole–NS mergers. Free neutrons might be retained in the outermost layer of the ejecta to produce a precursor via β decay.
Yan-Qing Qi, Tong Liu
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Spin Period Evolution of Decommissioned GLONASS Satellites

Aerospace
Light curve analysis of defunct satellites is critical for characterizing their rotational motion. An accurate understanding of this aspect will benefit active debris removal and on-orbit servicing missions as part of the solution to the space debris ...
Abdul Rachman, Alessandro Vananti, Thomas Schildknecht   +2 more
doaj   +1 more source

Light Curves of Supernovae [PDF]

International Astronomical Union Colloquium, 1996
Although emerging from a range of progenitor stars and the product of different explosion mechanisms the light curves of the various supernova types are shaped mainly by radioactive power. Core-collapse supernovae have in addition early peaks from shock breakout with a subsequent cooling phase and massive extended stars a recombination (plateau) phase.
openaire   +1 more source

A new approach of Analyzing GRB light curves [PDF]

, 2005
We estimated the Txx quantiles of the cumulative GRB light curves using our recalculated background. The basic information of the light curves was extracted by multivariate statistical methods.
Balázs, L. G., Varga, B., Horváth, I.
core   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

The single beacon: progresses in understanding Earth as an exoplanet using DSCOVR/EPIC observations

Frontiers in Remote Sensing
Almost 6000 exoplanets have thus far been confirmed, revolutionizing our understanding of planetary habitability. Yet, despite the identification of Earth-like exoplanets, definitive evidence of extraterrestrial life remains elusive.
Xun Jian, Xun Jian, Lixiang Gu, Siteng Fan, Stuart J. Bartlett, Jiani Yang, Jonathan H. Jiang, Yangcheng Luo, Yuk L. Yung, Yuk L. Yung   +9 more
doaj   +1 more source