Results 21 to 30 of about 197,789 (295)

Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning [PDF]

, 2014
Massive stars are key sources of radiative, kinetic and chemical feedback in the Universe. Grids of massive star models computed by different groups each using their own codes, input physics choices and numerical approximations, however, lead to ...
Fryer, C., Georgy, C., Heger, A., Herwig, F., Hirschi, R., Jones, S., Nishimura, N., Pignatari, M.   +7 more
core   +2 more sources

Model physics in low-mass solar-type stars: atomic diffusion and metallicity mixture

, 2018
Using asteroseismic data from the Kepler satellite, we explore the systematic uncertainties arising from changes in the input physics used when constructing evolution models of solar-type stars.
Campante, Tiago L., Cunha, Margarida S., Monteiro, Mário J. P. F. G., Nsamba, Benard, Reese, Daniel R., Rendle, Ben M., Verma, Kuldeep   +6 more
core   +2 more sources

Observationally-Motivated Analysis of Simulated Galaxies [PDF]

, 2014
The spatial and temporal relationships between stellar age, kinematics, and chemistry are a fundamental tool for uncovering the physics driving galaxy formation and evolution.
Gibson, B. K., Macfarlane, B. A., Miranda, M. S.   +2 more
core   +3 more sources

Chemical element transport in stellar evolution models [PDF]

Royal Society Open Science, 2017
Stellar evolution computations provide the foundation of several methods applied to study the evolutionary properties of stars and stellar populations, both Galactic and extragalactic.
Maurizio Salaris, Santi Cassisi
doaj   +1 more source

The s Process: Nuclear Physics, Stellar Models, Observations

, 2010
Nucleosynthesis in the s process takes place in the He burning layers of low mass AGB stars and during the He and C burning phases of massive stars. The s process contributes about half of the element abundances between Cu and Bi in solar system material.
Allen, B., Aoki, W., Aoki, W., Beer, H., Beer, H., Bisterzo, S., Bisterzo, S., Borella, A., Bradley, T., Chau, L., Christlieb, N., Clayton, D., Cristallo, S., de L. Musgrove, A., Diehl, R., Dillmann, I., Dillmann, I., Dupraz, C., Edvardsson, B., F. Käppeler, F. Rau, Freytag, B., Fürst, E., Gallino, R., Goriely, S., Gratton, R., Guber, K., Herwig, F., Herwig, F., Hill, V., Jehin, E., Koning, A., Käppeler, F., Lambert, D., Langer, N., Lisowski, P., Macklin, R., Macklin, R., Macklin, R., Macklin, R., Meusel, O., Perey, F., Prantzos, N., Péquignot, D., R. Gallino, Ratzinger, U., Rau, F., S. Bisterzo, Sadakane, K., Spencer, R., Straniero, O., Suda, T., Tain, J., Thielemann, F.-K., Van Winckel, H., Wako Aoki, Ward, R., Weigert, A., Wisshak, K., Woodward, P.   +59 more
core   +1 more source

Stellar Evolution Models of Young Stars: Progress and Limitations

, 2015
Stellar evolution models are a cornerstone of young star astrophysics, which necessitates that they yield accurate and reliable predictions of stellar properties.
Feiden, Gregory A.
core   +1 more source

Modest-2: A Summary [PDF]

, 2003
This is a summary paper of MODEST-2, a workshop held at the Astronomical Institute ``Anton Pannekoek'' in Amsterdam, 16-17 December 2002. MODEST is a loose collaboration of people interested in MOdelling DEnse STellar systems, particularly those ...
Deiters, S., Eggleton, P., Freitag, M., Giersz, M., Heggie, D., Hurley, J., Hut, P., Ivanova, N., Klessen, R., Kroupa, P., Lombardi, J., McMillan, S., Sills, A., Zinnecker, H., Zwart, S. Portegies   +14 more
core   +3 more sources

TOI-1333Ab is on a well-aligned orbit

Astronomy & Astrophysics
Context. Spin-orbit obliquity measurements of hot-Jupiter systems constrain giant planet migration and tidal evolution. In binary systems, combining stellar obliquities with the orbit-orbit angle (γ) between the planetary and stellar companion orbits ...
Knudstrup E., Marcussen M. L., Albrecht S. H., Lundkvist M. S., Persson C. M.   +4 more
doaj   +1 more source

Uncertainties in AGB Evolution and Nucleosynthesis

, 2016
We summarise the evolution and nucleosynthesis in AGB and Super-AGB stars. We then examine the major sources of uncertainty, especially mass-loss.Comment: 8 pages, no figures.
Karakas, Amanda, Lattanzio, John
core   +1 more source

The gas-phase nitridation processes of large, astronomically relevant polycyclic aromatic hydrocarbons cations in the interstellar medium

Astronomy & Astrophysics
Atomic nitrogen reacts efficiently with polycyclic aromatic hydrocarbons species, and potentially generates a diverse array of complex organic molecules in the interstellar medium.
Zhang Congcong, Ge Yanan, Wang Ziyi, Wang Wei, Hua Lijun, Zhao Nian, Yang Xuejuan, Zhen Junfeng   +7 more
doaj   +1 more source