Results 21 to 30 of about 3,026,820 (400)

Stellar Chemical Evolution [PDF]

Symposium - International Astronomical Union, 1997
One of the major achievements of astrophysics has been the demonstration that most of the chemical elements have been synthesized in stars: nucleosynthesis calculations of homogeneous and inhomogeneous big bang cosmologies show that, in comparison with the most metal-poor stars currently known, essentially no elements heavier than B existed at the era ...
John E. Norris
openaire   +3 more sources

Impact of Rotation on the Evolution of Low-Mass Stars [PDF]

arXiv, 2007
High precision photometry and spectroscopy of low-mass stars reveal a variety of properties standard stellar evolution cannot predict. Rotation, an essential ingredient of stellar evolution, is a step towards resolving the discrepancy between model predictions and observations. The first rotating stellar model, continuously tracing a low-mass star from
Brown, D., Cassisi, S., Pietrinferni, A., Salaris, M.   +3 more
arxiv   +2 more sources

Stellar Evolution and Modelling Stars [PDF]

, 2017
In this chapter I give an overall description of the structure and evolution of stars of different masses, and review the main ingredients included in state-of-the-art calculations aiming at reproducing observational features. I give particular emphasis to processes where large uncertainties still exist as they have strong impact on stellar properties ...
A. Bressan, A. Dotter, A. Maeder, A. Miglio, A. Pietrinferni, A. Weiss, A.M. Serenelli, A.M. Serenelli, A.M. Serenelli, B.E.J. Pagel, C. Angulo, C.A. Iglesias, C.J. Conselice, D. Cordier, D. Huber, D. Maoz, D. Mihalas, D. Reimers, D. Saumon, D.A. Vandenberg, D.G. Hummer, D.R. Alexander, E. Böhm-Vitense, E. Caffau, E.G. Adelberger, E.G. Adelberger, F. Herwig, F. Matteucci, F.J. Rogers, F.J. Rogers, G. Steigman, H. Costantini, H. Kjeldsen, I. Hubeny, J. Bland-Hawthorn, J. Choi, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J.-P. Cox, J.-P. Zahn, J.N. Bahcall, J.N. Bahcall, J.N. Winn, J.W. Ferguson, K.C. Schlaufman, L. Casagrande, L. Girardi, L. Silva Da, M. Asplund, M. Camenzind, M. Gabriel, M. Haft, M. Marta, M. Peimbert, M. Pinsonneault, M. Salaris, M. Schwarzschild, M. Schönberg, N. Grevesse, N. Itoh, N. Itoh, N.R. Badnell, P. Eggenberger, P. Kumar, R. Jimenez, R. Trampedach, S. Basu, S. Cassisi, S. Cassisi, S. Deheuvels, S. Deheuvels, S. Deheuvels, S. Turcotte, S.J. Smartt, T. Constantino, T.R. Bedding, V. Silva Aguirre, V. Silva Aguirre, V. Silva Aguirre, V. Silva Aguirre, V.M. Canuto, V.M. Canuto, W. Unno, W.P. Ledoux   +84 more
openaire   +6 more sources

Stellar evolution [PDF]

Nature, 1968
R. J. Tayler
openaire   +2 more sources

FIRE-3: Updated stellar evolution models, yields, & microphysics and fitting functions for applications in galaxy simulations [PDF]

Monthly notices of the Royal Astronomical Society, 2022
Increasingly, uncertainties in predictions from galaxy formation simulations (at sub-Milky Way masses) are dominated by uncertainties in stellar evolution inputs. In this paper, we present the full set of updates from the FIRE-2 version of the Feedback
P. Hopkins, A. Wetzel, Coral Wheeler, R. Sanderson, Michael Y. Grudić, Omid Sameie, M. Boylan-Kolchin, Matthew E. Orr, Xiangcheng Ma, C. Faucher-Giguére, D. Keres̆, E. Quataert, Kung-Yi Su, J. Moreno, R. Feldmann, J. Bullock, S. Loebman, D. Anglés-Alcázar, J. Stern, L. Necib, Caleb R Choban, C. Hayward   +21 more
semanticscholar   +1 more source

Stellar evolution confronts axion models [PDF]

Journal of Cosmology and Astroparticle Physics, 2021
Axion production from astrophysical bodies is a topic in continuous development, because of theoretical progress in the estimate of stellar emission rates and, especially, because of improved stellar observations. We carry out a comprehensive analysis of
Luca Di Luzio, M. Fedele, M. Giannotti, F. Mescia, E. Nardi   +4 more
semanticscholar   +1 more source

The SPOTS Models: A Grid of Theoretical Stellar Evolution Tracks and Isochrones for Testing the Effects of Starspots on Structure and Colors [PDF]

Astrophysical Journal, 2020
One-dimensional stellar evolution models have been successful at representing the structure and evolution of stars in diverse astrophysical contexts, but complications have been noted in the context of young, magnetically active stars, as well as close ...
G. Somers, L. Cao, M. Pinsonneault
semanticscholar   +1 more source

Stellar Structure and Evolution

Fundamentals of Astrophysics, 2021
These lecture notes are intended for an advanced astrophysics course on Stellar Structure and Evolution given at Utrecht University (NS-AP434M). Their goal is to provide an overview of the physics of stellar interiors and its application to the theory of
Michael Perryman
semanticscholar   +1 more source

Stellar Evolution in AGN Disks [PDF]

Astrophysical Journal, 2020
Active galactic nuclei (AGNs) are powered by geometrically thin accretion disks surrounding a central supermassive black hole. Here we explore the evolution of stars embedded in these extreme astrophysical environments (AGN stars).
M. Cantiello, A. Jermyn, D. Lin
semanticscholar   +1 more source

Modeling of magneto-rotational stellar evolution [PDF]

Astronomy & Astrophysics, 2020
While magnetic fields have long been considered significant for the evolution of magnetic non-degenerate stars and compact stars, it has become clear in recent years that, in fact, all stars are deeply affected by their effects. This is particularly true
Koh Takahashi, N. Langer
semanticscholar   +1 more source