Results 41 to 50 of about 323,555 (299)

Measuring proper motions of isolated neutron stars with Chandra [PDF]

, 2006
The excellent spatial resolution of the Chandra observatory offers the unprecedented possibility to measure proper motions at X-ray wavelength with relatively high accuracy using as reference the background of extragalactic or remote galactic X-ray ...
B.Y. Welsh, C. Motch, C. Motch, C.A. Perrot, C.D. Garmany, D.J. Schlegel, D.L. Kaplan, D.M. Sfeir, F. Haberl, F. Haberl, F. Haberl, F. Haberl, F.M. Walter, G. Hobbs, L.J. Pellizza, P. Predehl, P.T. Zeeuw de, R. Dodson, R. Hoogerwerf, R. Lallement, R.M. Humphreys, R.N. Manchester, S. Chatterjee, S. Johnston, S.B. Popov, S.E. Thorsett, W. Voges, W.F. Brisken   +27 more
core   +2 more sources

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

Molecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu, Xixi Lin, Emil Mladenov, Veronika Mladenova, Jürgen Thomale, Ali Sak, Yao Wang, Yunxuan Deng, Eleni Gkika, Martin Stuschke, George Iliakis   +10 more
wiley   +1 more source

Pathogenic Neurofibromatosis type 1 gene variants in tumors of non‐NF1 patients and role of R1276

FEBS Open Bio, EarlyView.
Somatic variants of the neurofibromatosis type 1 (NF1) gene occur across neoplasms without clinical manifestation of the disease NF1. We identified emerging somatic pathogenic NF1 variants and hotspots, for example, at the arginine finger 1276. Those missense variants provide fundamental information about neurofibromin's role in cancer.
Mareike Selig, Swanhild Lohse, Sara Elahi, Nils Hartmann, Stefanie Deckert, Shutian Si, Alexander Desuki, Anja Harder   +7 more
wiley   +1 more source

The Southern Proper Motion Program IV. The SPM4 Catalog

, 2011
We present the fourth installment of the Yale/San Juan Southern Proper Motion Catalog, SPM4. The SPM4 contains absolute proper motions, celestial coordinates, and (B,V) photometry for over 103 million stars and galaxies between the south celestial pole ...
Anderson, Bedin, Carlos E. López, Casetti-Dinescu, Casetti-Dinescu, Casetti-Dinescu, Dana I. Casetti-Dinescu, Danilo Castillo, David G. Monet, David Herrera, Dinescu, Dinescu, Dinescu, Fedorov, Girard, Girard, Girard, Hanson, Høg, Kalirai, Kalirai, Kallivayalil, Katherine Vieira, Monet, Norbert Zacharias, Perryman, Platais, Platais, Roeser, Skrutskie, Terrence M. Girard, Timothy C. Beers, van Altena, van Altena, Vieira, William F. van Altena, Young Sun Lee, Zacharias, Zacharias, Zwitter   +39 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Star Proper Motions Based on Two-epoch Observations from the SDSS and DESI Imaging Surveys

The Astronomical Journal
In this study, we present the construction of a new proper-motion catalog utilizing the photometric data from the Sloan Digital Sky Survey (SDSS) and Dark Energy Spectroscopic Instrument (DESI) imaging surveys, with a median time baseline of about 13 yr.
Yun-Ao Xiao, Hu Zou, Xin Xu, Lu Feng, Wei-Jian Guo, Wen-Xiong Li, Shu-Fei Liu, Zhi-Xia Shen, Gaurav Singh, Ji-Peng Sui, Jia-Li Wang, Sui-Jian Xue   +11 more
doaj   +1 more source

A Spectroscopic Method to Measure Macho Proper Motions

, 1994
A Massive Compact Halo Object (Macho) that lenses a background star will magnify different parts of the rotating stellar disk by varying amounts. The differential magnification will cause a shift in the centroid of the star's spectral lines during the ...
Gould, Andrew, Maoz, Dan
core   +1 more source

Using dwarf satellite proper motions to determine their origin [PDF]

, 2011
The highly organised distribution of satellite galaxies surrounding the Milky Way is a serious challenge to the concordance cosmological model. Perhaps the only remaining solution, in this framework, is that the dwarf satellite galaxies fall into the ...
Angus, Angus, Antonaldo Diaferio, Binney, Bournaud, Bovy, de Blok, Deason, D’Onghia, Efstathiou, G. W. Angus, Gentile, Gnedin, Governato, Kallivayalil, Kallivayalil, Kang, Klimentowski, Klypin, Kosowsky, Kroupa, Kroupa, Kroupa, Li, Libeskind, Libeskind, Libeskind, Lynden, Madau, Mateo, McGaugh, McGaugh, Metz, Metz, Metz, Milgrom, Milgrom, Moore, Navarro, Nichols, Pasetto, Pasetto, Pavel Kroupa, Peebles, Piatek, Piatek, Piatek, Piatek, Piatek, Sales, Sales, Serra, Spergel, Springel, Tiret, Tormen, Veilleux, Walker, Wechsler, Xue, Zentner   +60 more
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

The Orbits of Isolated Dwarfs in the Local Group from New 3D Kinematics: Constraints on First Infall, Backsplash, and Quenching Mechanisms

The Astrophysical Journal
It is commonly supposed that quenched field dwarfs near the edge of the Local Group (LG) are backsplash galaxies, having previously orbited within the Milky Way (MW) or M31’s virial radius, whereas galaxies on first infall should still have gas and star ...
Paul Bennet, Ekta Patel, Sangmo Tony Sohn, Andrés del Pino, Roeland P. van der Marel, Mark A. Fardal, Kristine Spekkens, Laura Congreve Hunter, Gurtina Besla, Laura L. Watkins, Daniel R. Weisz   +10 more
doaj   +1 more source