Zobrazeno 1 - 10
of 1 618
pro vyhledávání: '"A de Koter"'
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
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:
Stoop, Mitchel, de Koter, Alex, Kaper, Lex, Brands, Sarah, Zwart, Simon Portegies, Sana, Hugues, Stoppa, Fiorenzo, Gieles, Mark, Mahy, Laurent, Shenar, Tomer, Guo, Difeng, Nelemans, Gijs, Rieder, Steven
Massive stars are predominantly born in stellar associations or clusters. Their radiation fields, stellar winds, and supernovae strongly impact their local environment. In the first few million years of a cluster's life, massive stars are dynamically
Externí odkaz:
http://arxiv.org/abs/2410.06255
Triple stars are prevalent within the population of observed stars. Their evolution, compared to binaries, is notably more complex, influenced by unique dynamical, tidal, and mass transfer processes. Understanding these phenomena is essential for a c
Externí odkaz:
http://arxiv.org/abs/2409.03826
Autor:
Malfait, Jolien, Siess, Lionel, Esseldeurs, Mats, De Ceuster, Frederik, Wallström, Sofia H. J., de Koter, Alex, Decin, Leen
Publikováno v:
A&A 691, A84 (2024)
High-resolution observations reveal that the outflows of evolved low- and intermediate-mass stars harbour complex morphological structures that are linked to the presence of one or multiple companions. Hydrodynamical simulations provide a way to stud
Externí odkaz:
http://arxiv.org/abs/2408.13158
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
Autor:
Ramírez-Tannus, M. C., Derkink, A. R., Backs, F., de Koter, A., Sana, H., Poorta, J., Kaper, L., Stoop, M.
Publikováno v:
A&A 690, A178 (2024)
Significant progress has been made toward understanding the formation of massive ($M > 8~$M$_{\odot}$) binaries in close orbits. For example, the detection of a very low velocity dispersion among the massive stars in the young region M17 and the meas
Externí odkaz:
http://arxiv.org/abs/2408.08116
Autor:
Danilovich, T., Malfait, J., Van de Sande, M., Montargès, M., Kervella, P., De Ceuster, F., Coenegrachts, A., Millar, T. J., Richards, A. M. S., Decin, L., Gottlieb, C. A., Pinte, C., De Beck, E., Price, D. J., Wong, K. T., Bolte, J., Menten, K. M., Baudry, A., de Koter, A., Etoka, S., Gobrecht, D., Gray, M., Herpin, F., Jeste, M., Lagadec, E., Maes, S., McDonald, I., Marinho, L., Müller, H. S. P., Pimpanuwat, B., Plane, J. M. C., Sahai, R., Wallström, S. H. J., Yates, J., Zijlstra, A.
Publikováno v:
Nature Astronomy, 8, pages 308-327 (2024)
Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB) stars and planetary nebulae. Studies resolving the circumstellar envelopes of AGB stars have re
Externí odkaz:
http://arxiv.org/abs/2407.16979
Autor:
Shenar, T., Bodensteiner, J., Sana, H., Crowther, P. A., Lennon, D. J., Abdul-Masih, M., Almeida, L. A., Backs, F., Berlanas, S. R., Bernini-Peron, M., Bestenlehner, J. M., Bowman, D. M., Bronner, V. A., Britavskiy, N., de Koter, A., de Mink, S. E., Deshmukh, K., Evans, C. J., Fabry, M., Gieles, M., Gilkis, A., González-Torà, G., Gräfener, G., Götberg, Y., Hawcroft, C., Hénault-Brunet, V., Herrero, A., Holgado, G., Janssens, S., Johnston, C., Josiek, J., Justham, S., Kalari, V. M., Katabi, Z. Z., Keszthelyi, Z., Klencki, J., Kubát, J., Kubátová, B., Langer, N., Lefever, R. R., Ludwig, B., Mackey, J., Mahy, L., Apellániz, J. Maíz, Mandel, I., Maravelias, G., Marchant, P., Menon, A., Najarro, F., Oskinova, L. M., Ovadia, A. J. G. O'Grady R., Patrick, L. R., Pauli, D., Pawlak, M., Ramachandran, V., Renzo, M., Rocha, D. F., Sander, A. A. C., Sayada, T., Schneider, F. R. N., Schootemeijer, A., Schösser, E. C., Schürmann, C., Sen, K., Shahaf, S., Simón-Díaz, S., Stoop, M., van Loon, J. Th., Toonen, S., Tramper, F., Valli, R., van Son, L. A. C., Vigna-Gómez, A., Villaseñor, J. I., Vink, J. S., Wang, C., Willcox, R.
Publikováno v:
A&A 690, A289 (2024)
Surveys in the Milky Way and Large Magellanic Cloud revealed that the majority of massive stars will interact with companions during their lives. However, knowledge of the binary properties of massive stars at low metallicity, which approaches the co
Externí odkaz:
http://arxiv.org/abs/2407.14593
Autor:
Derkink, Annelotte, Ginski, Christian, Pinilla, Paola, Kurtovic, Nicolas, Kaper, Lex, de Koter, Alex, Valegård, Per-Gunnar, Mamajek, Eric, Backs, Frank, Benisty, Myriam, Birnstiel, Til, Columba, Gabriele, Dominik, Carsten, Garufi, Antonio, Hogerheijde, Michiel, van Holstein, Rob, Huang, Jane, Ménard, François, Rab, Christian, Ramírez-Tannus, María Claudia, Ribas, Álvaro, Williams, Jonathan P., Zurlo, Alice
The interplay between T Tauri stars and their circumstellar disks, and how this impacts the onset of planet formation has yet to be established. We studied a seemingly old T Tauri star, PDS 111, and its disk. We analyzed optical, infrared, and sub-mi
Externí odkaz:
http://arxiv.org/abs/2406.04160
Autor:
Sana, H., Tramper, F., Abdul-Masih, M., Blomme, R., Dsilva, K., Maravelias, G., Martins, L., Mehner, A., Wofford, A., Banyard, G., Barbosa, C. L., Bestenlehner, J., Hawcroft, C., Hillier, D. John, Todt, H., Larkin, C. J. K., Mahy, L., Najarro, F., Ramachandran, V., Ramirez-Tannus, M. C., Rubio-Diez, M. M., Sander, A. A. C., Shenar, T., Vink, J. S., Backs, F., Brands, S. A., Crowther, P., Decin, L., de Koter, A., Hamann, W. -R., Kehrig, C., Kuiper, R., Oskinova, L., Pauli, D., Sundqvist, J., Verhamme, O., collaboration, the XSHOOT-U
Publikováno v:
A&A 688, A104 (2024)
Using the medium resolution spectrograph X-shooter, spectra of 235 OB and Wolf-Rayet (WR) stars in sub-solar metallicity environments have been secured. [...]This second paper focuses on the optical observations of 232 Magellanic Clouds targets. It d
Externí odkaz:
http://arxiv.org/abs/2402.16987