Results 101 to 110 of about 250,517 (293)
, 2022 International audienceA major goal in the discovery and characterization of exoplanets is to identify terrestrial-type worlds that are similar to (or otherwise distinct from) our Earth.
Yong, David +5 more
core +1 more source
What Physical Factors Influence the Transformation between Blue Supergiants and Red Supergiants?
The Astrophysical JournalThe post-main-sequence evolution of massive stars is highly sensitive to key stellar model parameters, particularly initial rotational velocity and metallicity.
Yun He +8 more
doaj +1 more source
Inferring stellar compositions [PDF]
EPJ Web of ConferencesStars are not hydrostatic spheres and their atmospheric layers are not in local thermodynamic equilibrium. Inferring stellar surface abundances from such 1D+LTE models is subject to significant biases.
Korn Andreas J.
doaj +1 more source
Emerging experimental and computational methods for studying redox‐regulated structural transitions
FEBS Letters, EarlyView.Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass +2 more
wiley +1 more source
Primordial Lithium from Globular Cluster Turnoff Stars: M13 and M71
The Astrophysical JournalDuring Big Bang nucleosynthesis (BBN) in the first 15 minutes of the Universe, some ^7 Li was created along with isotopes of H and He. The determination of that primordial value of Li can help constrain the conditions at that time.
Ann Merchant Boesgaard +1 more
doaj +1 more source
Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding
FEBS Letters, EarlyView.In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança +2 more
wiley +1 more source
The Abundance of Helium in Stellar Interiors [PDF]
Highlights of Astronomy, 1971 From the titles of the other contributions to this morning’s session, one deduces that the hard facts of theory are to be sandwiched between the loose speculations of direct observation. I shall therefore feel free to discuss theoretical implications from stellar structure unencumbered by what are, after all, but peripheral considerations.I should ...
openaire +1 more source
iSpec: Stellar atmospheric parameters and chemical abundances
, 2014 Astrophysics Source Code Library, record ascl:1409.006iSpec is an integrated software framework written in Python for the treatment and analysis of stellar spectra and abundances.
Blanco-Cuaresma, S. +3 more
core +3 more sources
FEBS 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
Stellar abundances of beryllium and CUBES [PDF]
Astrophysics and Space Science, 2014 11 pages, 8 figures. To appear in Astrophysics and Space Science "Special Issue: UV Astronomy 3", Proceedings of the ESO/NUVA/IAG Workshop on Challenges in UV Astronomy, ESO Garching, 7-11 October ...
openaire +2 more sources