Zobrazeno 1 - 10
of 6 482
pro vyhledávání: '"Puls J"'
Autor:
Martínez-Sebastián, C., Simón-Díaz, S., Jin, H., Keszthelyi, Z., Holgado, G., Langer, N., Puls, J.
There is increasing evidence that single-star evolutionary models are inadequate to reproduce all observational properties of massive stars. Binary interaction has emerged as a key factor in the evolution of a significant fraction of massive stars. I
Externí odkaz:
http://arxiv.org/abs/2412.14107
Autor:
Backs, Frank, Brands, S. A., de Koter, A., Kaper, L., Vink, J. S., Puls, J., Sundqvist, J., Tramper, F., Sana, H., Bernini-Peron, M., Bestenlehner, J. M., Crowther, P. A., Hawcroft, C., Ignace, R., Kuiper, R., van Loon, J. Th., Mahy, L., Marcolino, W., Najarro, F., Oskinova, L. M., Pauli, D., Ramachandran, V., Sander, A. A. C., Verhamme, O.
Mass loss through a stellar wind is an important physical process that steers the evolution of massive stars and controls the properties of their end-of-life products, such as the supernova type and the mass of compact remnants. For an accurate mass
Externí odkaz:
http://arxiv.org/abs/2411.06884
Autor:
Verhamme, O., Sundqvist, J., de Koter, A., Sana, H., Backs, F., Brands, S. A., Najarro, F., Puls, J., Vink, J. S., Crowther, P. A., Kubátová, B., Sander, A. A. C., Bernini-Peron, M., Kuiper, R., Prinja, R. K., Schillemans, P., Shenar, T., van Loon, J. Th., collaboration, XShootu
Publikováno v:
A&A 692, A91 (2024)
Context. Current implementations of mass loss for hot, massive stars in stellar evolution models include a sharp increase in mass loss when blue supergiants become cooler than Teff 20-22kK. This drastic mass-loss jump has been motivated by the potent
Externí odkaz:
http://arxiv.org/abs/2410.14937
Autor:
Backs, Frank, Brands, S. A., Ramírez-Tannus, M. C., Derkink, A. R., de Koter, A., Poorta, J., Puls, J., Kaper, Lex
The outcome of the formation of massive stars is an important anchor point in their evolution. It provides insight into the physics of the assembly process, and sets the conditions for stellar evolution. We characterize a population of 18 highly redd
Externí odkaz:
http://arxiv.org/abs/2408.11713
At metallicities lower than that of the Small Magellanic Cloud, it remains essentially unexplored how fossil magnetic fields, forming large-scale magnetospheres, could affect the evolution of massive stars, thereby impacting the fundamental building
Externí odkaz:
http://arxiv.org/abs/2407.20492
Autor:
Hawcroft, C., Mahy, L., Sana, H., Sundqvist, J. O., Abdul-Masih, M., Brands, S. A., Decin, L., deKoter, A., Puls, J.
Publikováno v:
A&A 690, A126 (2024)
We constrain wind parameters of a sample of 18 O-type stars in the LMC, through analysis with stellar atmosphere and wind models including the effects of optically thick clumping. This allows us to determine the most accurate spectroscopic mass-loss
Externí odkaz:
http://arxiv.org/abs/2407.06775
Autor:
Sander, A. A. C., Bouret, J. -C., Bernini-Peron, M., Puls, J., Backs, F., Berlanas, S. R., Bestenlehner, J. M., Brands, S. A., Herrero, A., Martins, F., Maryeva, O., Pauli, D., Ramachandran, V., Crowther, P. A., Gómez-González, V. M. A., Gormaz-Matamala, A. C., Hamann, W. -R., Hillier, D. J., Kuiper, R., Larkin, C. J. K., Lefever, R. R., Mehner, A., Najarro, F., Oskinova, L. M., Schösser, E. C., Shenar, T., Todt, H., ud-Doula, A., Vink, J. S.
Publikováno v:
A&A 689, A30 (2024)
CONTEXT: The spectral analysis of hot, massive stars is a fundamental astrophysical method to obtain their intrinsic properties and their feedback. Quantitative spectroscopy for hot, massive stars requires detailed numerical modeling of the atmospher
Externí odkaz:
http://arxiv.org/abs/2407.03137
Autor:
Martins, F., Bouret, J. -C., Hillier, D. J., Brands, S. A., Crowther, P. A., Herrero, A., Najarro, F., Pauli, D., Puls, J., Ramachandran, V., Sander, A. A. C., Vink, J. S., collaboration, the XshootU
Massive stars rotate faster, on average, than lower mass stars. Stellar rotation triggers hydrodynamical instabilities which transport angular momentum and chemical species from the core to the surface. Models of high-mass stars that include these pr
Externí odkaz:
http://arxiv.org/abs/2405.01267
Autor:
Taormina, Mónica, Kudritzki, R. -P., Pilecki, B., Pietrzyński, G., Thompson, I. B., Puls, J., Górski, M., Zgirski, B., Graczyk, D., Gieren, W., Hajdu, G.
We present the results from a complex study of an eclipsing O-type binary (Aa+Ab) with the orbital period $P_{A}=3.2254367$ days, that forms part of a higher-order multiple system in a configuration (A+B)+C. We derived masses of the Aa+Ab binary $M_{
Externí odkaz:
http://arxiv.org/abs/2404.02970
Publikováno v:
A&A 679, A19 (2023)
Winds of massive stars have density inhomogeneities (clumping) that may affect the formation of spectral lines in different ways, depending on their formation region. Most of previous and current spectroscopic analyses have been performed in the opti
Externí odkaz:
http://arxiv.org/abs/2309.10615