Zobrazeno 1 - 10
of 1 164
pro vyhledávání: '"Sana, H."'
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
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
Investigating 39 Galactic Wolf-Rayet stars with VLTI/GRAVITY: Uncovering A Long Period Binary Desert
Autor:
Deshmukh, K., Sana, H., Mérand, A., Bordier, E., Langer, N., Bodensteiner, J., Dsilva, K., Frost, A. J., Gosset, E., Bouquin, J. -B. Le, Lefever, R. R., Mahy, L., Patrick, L. R., Reggiani, M., Sander, A. A. C., Shenar, T., Tramper, F., Villaseñor, J. I., Waisberg, I.
Wolf-Rayet stars (WRs) are one of the final evolutionary stages of massive stars and immediate progenitors of stellar-mass black holes. Their multiplicity forms an important anchor point in single and binary population models for predicting gravitati
Externí odkaz:
http://arxiv.org/abs/2409.15212
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:
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:
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:
Schootemeijer, A., Shenar, T., Langer, N., Grin, N., Sana, H., Schürmann, G. Gräfener C., Wang, C., Xu, X. -T.
Publikováno v:
A&A 689, A157 (2024)
In order to predict the black hole mass distributions at high redshift, we need to understand whether very massive single stars ($M>40$ M$_\odot$) at low metallicity $Z$ lose their hydrogen-rich envelopes, like their metal-rich counterparts, or wheth
Externí odkaz:
http://arxiv.org/abs/2406.01420
Autor:
Lennon, D. J., Dufton, P. L., Villaseñor, J. I., Langer, N., Evans, C. J., Sana, H., Taylor, W. D.
Publikováno v:
A&A 688, A141 (2024)
The spin evolution of stars in close binary systems can be strongly affected by tides. We investigate the rotational synchronisation of the stellar components for 69 SB1 systems and 14 SB2 B-type systems in the 30 Doradus region of the Large Magellan
Externí odkaz:
http://arxiv.org/abs/2405.17608
Autor:
Frost, A. J., Sana, H., Mahy, L., Wade, G., Barron, J., Bouquin, J. -B. Le, Mérand, A., Schneider, F. R. N., Shenar, T., Barbá, R. H., Bowman, D. M., Fabry, M., Farhang, A., Marchant, P., Morrell, N. I., Smoker, J. V.
Publikováno v:
Science, 11 Apr 2024, Vol 384, Issue 6692, pp. 214-217
Massive stars (those larger than 8 solar masses at formation) have radiative envelopes that cannot sustain a dynamo, the mechanism that produces magnetic fields in lower-mass stars. Despite this, approximately 7\% of massive stars have observed magne
Externí odkaz:
http://arxiv.org/abs/2404.10167
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