Zobrazeno 1 - 10
of 1 009
pro vyhledávání: '"Meynet, G."'
Autor:
Dumont, T., Monpribat, E., Courtin, S., Choplin, A., Bonhomme, A., Ekström, S., Heine, M., Curien, D., Nippert, J., Meynet, G.
Publikováno v:
A&A 688, A115 (2024)
Nuclear reactions drive the stellar evolution and contribute to the stellar and galactic chemicals abundances. New determinations of the nuclear reaction rates for key fusion reactions of stellar evolution are now available, paving the way to improve
Externí odkaz:
http://arxiv.org/abs/2404.18662
We present evolutionary models of massive, accreting population III stars with constant and variable accretion rates until the end of silicon burning, with final masses of 1000 - 3000 Msol. In all our models, after the core-hydrogen-burning phase, th
Externí odkaz:
http://arxiv.org/abs/2309.04435
Publikováno v:
A&A 679, A137 (2023)
In addition to being spectacular objects, Very Massive Stars (VMS) are suspected to have a tremendous impact on their environment and on the whole cosmic evolution. The nucleosynthesis both during their advanced stages and their final explosion may c
Externí odkaz:
http://arxiv.org/abs/2309.00062
Autor:
Qin, Y., Hu, R. -C., Meynet, G., Wang, Y. Z., Zhu, J. -P., Song, H. F., Shu, X. W., Wu, S. C.
Publikováno v:
A&A 671, A62 (2023)
To date, various formation channels of merging events have been heavily explored with the detection of nearly 100 double black hole (BH) merger events reported by the LIGO-Virgo-KAGRA (LVK) Collaboration. We here systematically investigate an alterna
Externí odkaz:
http://arxiv.org/abs/2301.04918
Autor:
Keszthelyi, Z., de Koter, A., Götberg, Y., Meynet, G., Brands, S. A., Petit, V., Carrington, M., David-Uraz, A., Geen, S. T., Georgy, C., Hirschi, R., Puls, J., Ramalatswa, K. J., Shultz, M. E., ud-Doula, A.
Magnetism can greatly impact the evolution of stars. In some stars with OBA spectral types there is direct evidence via the Zeeman effect for stable, large-scale magnetospheres, which lead to the spin-down of the stellar surface and reduced mass loss
Externí odkaz:
http://arxiv.org/abs/2211.07060
Autor:
Keszthelyi, Z., de Koter, A., Götberg, Y., Meynet, G., Brands, S. A., Petit, V., Carrington, M., David-Uraz, A., Geen, S. T., Georgy, C., Hirschi, R., Puls, J., Ramalatswa, K. J., Shultz, M. E., ud-Doula, A.
Magnetic fields can drastically change predictions of evolutionary models of massive stars via mass-loss quenching, magnetic braking, and efficient angular momentum transport, which we aim to quantify in this work. We use the MESA software instrument
Externí odkaz:
http://arxiv.org/abs/2209.06350
Publikováno v:
A&A 665, A133 (2022)
Here we present evolutionary models for a set of massive stars, introducing a new prescription for the mass-loss rate obtained from hydrodynamical calculations in which the wind velocity profile, $v(r)$, and the line-acceleration, $g_\text{line}$, ar
Externí odkaz:
http://arxiv.org/abs/2207.04786
Autor:
Martinet, S., Meynet, G., Nandal, D., Ekström, S., Georgy, C., Haemmerlé, L., Hirschi, R., Yusof, N., Gounelle, M., Dwarkadas, V.
Publikováno v:
A&A 664, A181 (2022)
The $^{26}$Al short-lived radioactive nuclide is the source of the observed galactic diffuse $\gamma$-ray emission at 1.8 MeV. While different sources of $^{26}$Al have been explored, such as AGB stars, massive stars winds, and supernovae, the contri
Externí odkaz:
http://arxiv.org/abs/2205.15184
Autor:
Moyano, F. D., Eggenberger, P., Meynet, G., Gehan, C., Mosser, B., Buldgen, G., Salmon, S. J. A. J.
Publikováno v:
A&A 663, A180 (2022)
Thanks to asteroseismology, constraints on the core rotation rate are available for hundreds of low- and intermediate-mass stars in evolved phases. Current physical processes tested in stellar evolution models cannot reproduce the evolution of these
Externí odkaz:
http://arxiv.org/abs/2205.03490
Publikováno v:
A&A 665, A147 (2022)
The interaction between weak magnetic fields and rotation can lead to instabilities that transport angular momentum (AM) and chemical elements affecting the evolution of massive stars. We explore the effects of the magneto-rotational instability (MRI
Externí odkaz:
http://arxiv.org/abs/2204.00016