Zobrazeno 1 - 10
of 1 252
pro vyhledávání: '"Kuiper, R"'
Autor:
Bernini-Peron, M., Sander, A. A. C., Ramachandran, V., Oskinova, L. M., Vink, J. S., Verhamme, O., Najarro, F., Josiek, J., Brands, S. A., Crowther, P. A., Gómez-González, V. M. A., Gormaz-Matamala, A. C., Hawcroft, C., Kuiper, R., Mahy, L., Marcolino, W. L. F., Martins, L. P., Mehner, A., Parsons, T. N., Pauli, D., Shenar, T., Schootemeijer, A., Todt, H., van Loon, J. Th., collaboration, the XShootU
Context. B supergiants (BSGs) represent an important connection between the main sequence and more extreme evolutionary stages of massive stars. Additionally, lying toward the cool end of the hot star regime, determining their wind properties is cruc
Externí odkaz:
http://arxiv.org/abs/2407.14216
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.
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:
Ramachandran, V., Sander, A. A. C., Pauli, D., Klencki, J., Backs, F., Tramper, F., Bernini-Peron, M., Crowther, P., Hamann, W. -R., Ignace, R., Kuiper, R., Oey, S., Oskinova, L. M., Shenar, T., Todt, H., Vink, J. S., Wang, L., Wofford, A., collaboration, the XShootU
On the route towards merging neutron stars and stripped-envelope supernovae, binary population synthesis predicts a large number of post-interaction systems with massive stars that have stripped off their outer layers. Yet, observations of such stars
Externí odkaz:
http://arxiv.org/abs/2406.17678
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
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
Autor:
Beuther, H., Gieser, C., Soler, J. D., Zhang, Q., Rao, R., Semenov, D., Henning, Th., Pudritz, R., Peters, T., Klaassen, P., Beltran, M. T., Palau, A., Moeller, T., Johnston, K. G., Zinnecker, H., Urquhart, J., Kuiper, R., Ahmadi, A., Sanchez-Monge, A., Feng, S., Leurini, S., Ragan, S. E.
Methods: Observing the large pc-scale Stokes I mm dust continuum emission with the IRAM 30m telescope and the intermediate-scale (<0.1pc) polarized submm dust emission with the Submillimeter Array toward a sample of 20 high-mass star-forming regions
Externí odkaz:
http://arxiv.org/abs/2311.11874
Autor:
Vink, Jorick S., Mehner, A., Crowther, P. A., Fullerton, A., Garcia, M., Martins, F., Morrell, N., Oskinova, L. M., St-Louis, N., ud-Doula, A., Sander, A. A. C., Sana, H., Bouret, J. -C., Kubatova, B., Marchant, P., Martins, L. P., Wofford, A., van Loon, J. Th., Telford, O. Grace, Gotberg, Y., Bowman, D. M., Erba, C., Kalari, V. M., Abdul-Masih, M., Alkousa, T., Backs, F., Barbosa, C. L., Berlanas, S. R., Bernini-Peron, M., Bestenlehner, J. M., Blomme, R., Bodensteiner, J., Brands, S. A., Evans, C. J., David-Uraz, A., Driessen, F. A., Dsilva, K., Geen, S., Gomez-Gonzalez, V. M. A., Grassitelli, L., Hamann, W. -R., Hawcroft, C., Herrero, A., Higgins, E. R., Hillier, D. John, Ignace, R., Istrate, A. G., Kaper, L., Kee, N. D., Kehrig, C., Keszthelyi, Z., Klencki, J., de Koter, A., Kuiper, R., Laplace, E., Larkin, C. J. K., Lefever, R. R., Leitherer, C., Lennon, D. J., Mahy, L., Apellaniz, J. Maiz, Maravelias, G., Marcolino, W., McLeod, A. F., de Mink, S. E., Najarro, F., Oey, M. S., Parsons, T. N., Pauli, D., Pedersen, M. G., Prinja, R. K., Ramachandran, V., Ramirez-Tannus, M. C., Sabhahit, G. N., Schootemeijer, A., Serantes, S. Reyero, Shenar, T., Stringfellow, G. S., Sudnik, N., Tramper, F., Wang, L.
Publikováno v:
A&A 675, A154 (2023)
Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational-wave events involving spectacular black-hole mergers, indicate that the low-metallicity Universe is fundamentally different from our own Galaxy.
Externí odkaz:
http://arxiv.org/abs/2305.06376
Autor:
Ahmadi, Aida, Beuther, H., Bosco, F., Gieser, C., Suri, S., Mottram, J. C., Kuiper, R., Henning, Th., Sánchez-Monge, Á., Linz, H., Pudritz, R. E., Semenov, D., Winters, J. M., Möller, T., Beltrán, M. T., Csengeri, T., Galván-Madrid, R., Johnston, K. G., Keto, E., Klaassen, P. D., Leurini, S., Longmore, S. N., Lumsden, S. L., Maud, L. T., Moscadelli, L., Palau, A., Peters, T., Ragan, S. E., Urquhart, J. S., Zhang, Q., Zinnecker, H.
Publikováno v:
A&A 677, A171 (2023)
The fragmentation mode of high-mass molecular clumps and the accretion processes that form the most massive stars ($M\gtrsim 8M_\odot$) are still not well understood. To this end, we have undertaken a large observational program (CORE) making use of
Externí odkaz:
http://arxiv.org/abs/2305.00020
Autor:
Pauli, D., Oskinova, L. M., Hamann, W. -R., Bowman, D. M., Todt, H., Shenar, T., Sander, A. A. C., Erba, C., Gómez-González, V. M. A., Kehrig, C., Klencki, J., Kuiper, R., Mehner, A., de Mink, S. E., Oey, M. S., Ramachandran, V., Schootemeijer, A., Serantes, S. Reyero, Wofford, A.
Publikováno v:
A&A 673, A40 (2023)
The origin of the observed population of Wolf-Rayet (WR) stars in low-metallicity (low-Z) galaxies, such as the Small Magellanic Cloud (SMC), is not yet understood. Standard, single-star evolutionary models predict that WR stars should stem from very
Externí odkaz:
http://arxiv.org/abs/2303.03989
Recent observations found close-in planets with significant atmospheres of hydrogen and helium in great abundance. These are the so-called super-Earths and mini-Neptunes. Their atmospheric composition suggests that they formed early during the gas-ri
Externí odkaz:
http://arxiv.org/abs/2202.11422
Autor:
Beltrán, M. T., Rivilla, V. M., Cesaroni, R., Galli, D., Moscadelli, L., Ahmadi, A., Beuther, H., Etoka, S., Goddi, C., Klaassen, P. D., Kuiper, R., Kumar, M. S. N., Lorenzani, A., Peters, T., Sánchez-Monge, Á., Schilke, P., van der Tak, F., Vig, S.
Publikováno v:
A&A 659, A81 (2022)
Context. To better understand the formation of high-mass stars, it is fundamental to investigate how matter accretes onto young massive stars, how it is ejected, and how all this differs from the low-mass case. The massive protocluster G31.41+0.31 is
Externí odkaz:
http://arxiv.org/abs/2201.10438