Results 61 to 70 of about 3,026,820 (400)
The Geneva stellar evolution code [PDF]
Astrophysics and Space Science, 2007 This paper presents the Geneva stellar evolution code with special emphasis on the modeling of solar-type stars. The basic input physics used in the Geneva code as well as the modeling of atomic diffusion is first discussed. The physical description of rotation is then presented.
Suzanne Talon +7 more
openaire +4 more sources
Frontiers in Astronomy and Space Sciences, 2021 Theoretical prediction of surface stellar abundances of light elements–lithium, beryllium, and boron–represents one of the most interesting open problems in astrophysics.
E. Tognelli +14 more
doaj +1 more source
Multiplicity in Early Stellar Evolution [PDF]
, 2014 Observations from optical to centimeter wavelengths have demonstrated that multiple systems of two or more bodies is the norm at all stellar evolutionary stages.
Boss, Alan P. +7 more
core +1 more source
3D Radiation-hydrodynamic Simulations Resolving Interior of Rapidly Accreting Primordial Protostar
The Astrophysical Journal, 2023 Direct collapse of supermassive stars is a possible pathway to form supermassive black hole seeds at high redshifts. Whereas previous three-dimensional (3D) simulations demonstrate that supermassive stars form via rapid mass accretion, those resolving ...
Kazutaka Kimura +3 more
doaj +1 more source
Wind anisotropy and stellar evolution [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractMass loss is a determinant factor which strongly affects the evolution and the fate of massive stars. At low metallicity, stars are supposed to rotate faster than at the solar one. This favors the existence of stars near the critical velocity. In this rotation regime, the deformation of the stellar surface becomes important, and wind anisotropy
Georgy, Cyril +2 more
openaire +5 more sources
Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View [PDF]
, 2017 We use the multi-epoch radial velocities acquired by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey to perform a large-scale statistical study of stellar multiplicity for field stars in the Milky Way, spanning the evolutionary
C. Badenes +23 more
semanticscholar +1 more source
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
Synthetic clusters of massive stars to test stellar evolution models [PDF]
, 2015 During the last few years, the Geneva stellar evolution group has released new grids of stellar models, including the effect of rotation and with updated physical inputs (Ekstr\"om et al. 2012; Georgy et al. 2013a,b). To ease the comparison between the outputs of the stellar evolution computations and the observations, a dedicated tool was developed ...
arxiv +1 more source
The Dartmouth Stellar Evolution Database [PDF]
, 2008 The ever-expanding depth and quality of photometric and spectroscopic observations of stellar populations increase the need for theoretical models in regions of age-composition parameter space that are largely unexplored at present.
A. Dotter +5 more
semanticscholar +1 more source
Exploring stellar evolution with gravitational-wave observations [PDF]
Monthly notices of the Royal Astronomical Society, 2017 Recent detections of gravitational waves from merging binary black holes opened new possibilities to study the evolution of massive stars and black hole formation. In particular, stellar evolution models may be constrained on the basis of the differences
I. Dvorkin +3 more
semanticscholar +1 more source