Results 41 to 50 of about 41,445 (309)
Modelling Collision Products of Triple-Star Mergers
, 2003 In dense stellar clusters, binary-single and binary-binary encounters can ultimately lead to collisions involving two or more stars. A comprehensive survey of multi-star collisions would need to explore an enormous amount of parameter space, but here we ...
A. P. Thrall +76 more
core +1 more source
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Wave Conversion, Decay, and Heating in a Partially Ionized Two-fluid Magneto-atmosphere
The Astrophysical Journal, 2023 A ray-theoretic phase-space description of linear waves in a two-fluid (charges and neutrals) magnetized plasma is used to calculate analytic decay rates and mode transmission and conversion coefficients between fast and slow waves in two dimensions due ...
Paul S. Cally, M. M. Gómez-Míguez
doaj +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
Formation of Stripped Stars from Stellar Collisions in Galactic Nuclei
The Astrophysical JournalTidal disruption events (TDEs) are an important way to probe the properties of stellar populations surrounding supermassive black holes. The observed spectra of several TDEs, such as ASASSN-14li, show high nitrogen-to-carbon (N/C) abundance ratios ...
Charles F. A. Gibson +9 more
doaj +1 more source
Predicting stellar collision outcomes for main sequence stars
Astronomy & AstrophysicsContext. Stellar collisions in dense galactic nuclei could play an important role in fueling supermassive black holes (SMBHs) and shaping their environments.
Amaro Seoane Pau
doaj +1 more source
Tau acetylation at K331 has limited impact on tau pathology in vivo
FEBS Letters, EarlyView.We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source
A Galactic Transformation—Understanding the SMC’s Structural and Kinematic Disequilibrium
The Astrophysical JournalThe SMC is in disequilibrium. Gas line-of-sight (LOS) velocity maps show a gradient of 60–100 km s ^−1 , generally interpreted as a rotating gas disk consistent with the Tully–Fisher relation. Yet, the stars don’t show rotation.
Himansh Rathore +3 more
doaj +1 more source
Towards the Provision of Accurate Atomic Data for Neutral Iron
Galaxies, 2018 The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities.
Andrew Conroy +3 more
doaj +1 more source
Atomic data from the IRON project - LI. Electron impact excitation of FeIX [PDF]
, 2002 We calculate collision strengths and thermally averaged collision strengths for electron excitation between the one hundred and forty energetically lowest levels of Fe8+.
Le Dourneuf, M, Storey, PJ, Zeippen, CJ
core