Results 81 to 90 of about 7,730,975 (288)

Planetary Engulfment Prognosis within the ρ CrB System

open access: yesThe Astrophysical Journal, 2023
Exoplanets have been detected around stars at various stages of their lives, ranging from young stars emerging from formation to the latter stages of evolution, including white dwarfs and neutron stars.
Stephen R. Kane
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

On Stellar Models with Blanketed Atmospheres as Boundary Conditions

open access: yes, 2007
The impact on the predicted Teff scale of using the latest MARCS model atmospheres, instead of a fixed atmospheric structure (e.g., the gray T–τ relation) is examined.
Edvardsson, Bengt,   +4 more
core   +1 more source

Toward a Comprehensive Grid of Cepheid Models with MESA. I. Uncertainties of the Evolutionary Tracks of Intermediate-mass Stars

open access: yesThe Astrophysical Journal Supplement Series
Helium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops—the part of the evolutionary track at which the instability strip is crossed.
O. Ziółkowska   +5 more
doaj   +1 more source

GASTAG evolutionary tracks and isochrones from coupled 1D and 3D models: Systematic temperature offsets in red giants

open access: yesAstronomy & Astrophysics
Models of stellar structure and evolution describe the global and internal properties of stars throughout their lifetimes and are indispensable for studies of individual stars, stellar clusters, and Galactic evolution.
Zhou Yixiao   +3 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Confidence limits of evolutionary synthesis models [PDF]

open access: yes, 2001
Evolutionary synthesis models are a fundamental tool to interpret the properties of observed stellar systems. In order to achieve a meaningful comparison between models and real data, it is necessary to calibrate the models themselves, i.e.
D. Schaerer   +6 more
core   +1 more source

Prospecting the protein design landscape

open access: yesFEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona   +4 more
wiley   +1 more source

STEllAR-GROUP/octotiger: Kokkos kernels

open access: yes, 2021
What's Changed Branch by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/341 Add Zenodo DOI by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/342 Docu by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/347 Add ...
Biddiscombe, John   +10 more
core   +1 more source

Rapid Stellar and Binary Population Synthesis with COMPAS: Methods Paper II

open access: yesThe Astrophysical Journal Supplement Series
The COMPAS ( http://compas.science ) public rapid binary population synthesis code has undergone a number of key improvements since the original COMPAS methods paper was published.
Team COMPAS   +16 more
doaj   +1 more source

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