Results 91 to 100 of about 2,843,859 (384)
Living with a Red Dwarf: X-Ray, UV, and Ca ii Activity–Age Relationships of M Dwarfs
The Astrophysical Journal, 2023 The vast majority of stars in the nearby stellar neighborhood are M dwarfs. Their low masses and luminosities result in slow rates of nuclear evolution and minimal changes to the stars’ observable properties, even along astronomical timescales.
Scott G. Engle
doaj +1 more source
Impacts of stellar evolution and dynamics on the habitable zone: The role of rotation and magnetic activity [PDF]
, 2016 In this article, we aim to provide the community with the dependence of the habitable zone upon the stellar mass, metallicity, rotation, and for various prescriptions of the limits of the habitable zone. We use the STAREVOL code to study the evolution of
F. Gallet +5 more
semanticscholar +1 more source
Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia
FEBS Letters, EarlyView.This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley +1 more source
Introduction to the Theory of Stellar Evolution [PDF]
, 2014 In this chapter we briefly review the basics of the theory of stellar evolution.
Beccari,G, CARRARO, GIOVANNI
openaire +5 more sources
Evolution of the First Stellar Generations [PDF]
EAS Publications Series, 2007 6 pages, 3 figure, to appear in the proceedings of "Chemodynamics: from the first stars to local galaxies ...", Lyon, France, 10-14 July ...
André Maeder +4 more
openaire +4 more sources
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
The ups and downs of inferred cosmological lithium [PDF]
EPJ Web of ConferencesI summarize the stellar side of the cosmological lithium problem(s). Evidence from independent studies is accumulating and indicates that stars may very well be fully responsible for lowering their surface lithium from the predicted primordial value to ...
Korn Andreas
doaj +1 more source
The True Nature of the Brightest Local Triple Stellar Candidates within 100 pc in the Galaxy
The Astronomical Journal, 2023 We present a study of a sample of bright ( V ≤ 10 mag) and close ( d ≤ 100 pc) triple–stellar system candidates in the galaxy, consisting of eight systems in total.
Z. T. Yousef +3 more
doaj +1 more source
OLDER AND COLDER: THE IMPACT OF STARSPOTS ON PRE-MAIN-SEQUENCE STELLAR EVOLUTION [PDF]
, 2015 We assess the impact of starspots on the evolution of late-type stars during the pre-main sequence (pre-MS) using a modified stellar evolution code. We find that heavily spotted models of mass 0.1–1.2 M⊙ are inflated by up to 10% during the pre-MS, and ...
G. Somers, M. Pinsonneault
semanticscholar +1 more source
Stellar Evolution at Low Metallicity [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractMassive stars played a key role in the early evolution of the Universe. They formed with the first halos and started the re-ionisation. It is therefore very important to understand their evolution. In this review, we first recall the effect of metallicity (Z) on the evolution of massive stars.
Hirschi, Raphael +4 more
openaire +4 more sources