Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Tannus M"'
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:
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
Autor:
Derkink, A. R., Ramírez-Tannus, M. C., Kaper, L., de Koter, A., Backs, F., Poorta, J., van Gelder, M. L.
It is a challenge to study the formation process of massive stars: their formation time is short, they are few, often deeply embedded, and at relatively large distances. Our strategy is to study the outcome of the star formation process and to look f
Externí odkaz:
http://arxiv.org/abs/2310.04287
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
Publikováno v:
A&A 676, A122 (2023)
Recently much progress has been made in probing the embedded stages of massive star formation, pointing to formation scenarios akin to a scaled up version of low-mass star formation. However, the latest stages of massive star formation have rarely be
Externí odkaz:
http://arxiv.org/abs/2305.01436
Autor:
Backs, Frank, Poorta, J., Rab, Ch., Derkink, A. R., de Koter, A., Kaper, L., Ramírez-Tannus, M. C., Kamp, I.
Publikováno v:
A&A 671, A13 (2023)
The young massive-star-forming region M17 contains optically visible massive pre-main-sequence stars that are surrounded by circumstellar disks. Such disks are expected to disappear when these stars reach the main sequence. The physical and dynamical
Externí odkaz:
http://arxiv.org/abs/2301.06819
Autor:
Bordier, E., Frost, A. J., Sana, H., Reggiani, M., Mérand, A., Rainot, A., Ramírez-Tannus, M. C., de Wit, W. J.
Publikováno v:
A&A 663, A26 (2022)
Spectroscopic multiplicity surveys of O stars in young clusters and OB associations have revealed that a large portion ($\sim$ 70%) of these massive stars (M$_{i}$ $\gt$ 15 $M_{\odot}$) belong to close and short-period binaries (physical separation d
Externí odkaz:
http://arxiv.org/abs/2203.05036
Autor:
Ramírez-Tannus, M. C., Backs, F., de Koter, A., Sana, H., Beuther, H., Bik, A., Brandner, W., Kaper, L., Linz, H., Henning, Th., Poorta, J.
Publikováno v:
A&A 645, L10 (2021)
The majority of massive stars ($>8$ $\rm{M_{\odot}}$) in OB associations are found in close binary systems. Nonetheless, the formation mechanism of these close massive binaries is not understood yet. Using literature data, we measured the radial-velo
Externí odkaz:
http://arxiv.org/abs/2101.01604
Autor:
GRAVITY Collaboration, Koutoulaki, M., Lopez, R. Garcia, Natta, A., Fedriani, R., oGaratti, A. Caratti, Ray, T. P., Coffey, D., Brandner, W., Dougados, C., Garcia, P. J. V, Klarmann, L., Labadie, L., Perraut, K., Sanchez-Bermudez, J., Lin, C. -C., Amorim, A., Bauböck, M., Benisty, M., Berger, J. P., Buron, A., Caselli, P., Clénet, Y., Foresto, V. Coudé du, de Zeeuw, P. T., Duvert, G., de Wit, W., Eckart, A., Eisenhauer, F., Filho, M., Gao, F., Gendron, E., Genzel, R., Gillessen, S., Grellmann, R., Habibi, M., Haubois, X., Haussmann, F., Henning, T., Hippler, S., Hubert, Z., Horrobin, M., Rosales, A. Jimenez, Jocou, L., Kervella, P., Kolb, J., Lacour, S., Bouquin, J. -B. Le, Léna, P., Linz, H., Ott, T., Paumard, T., Perrin, G., Pfuhl, O., Ramírez-Tannus, M. C., Rau, C., Rousset, G., Scheithauer, S., Shangguan, J., Stadler, J., Straub, O., Straubmeier, C., Sturm, E., van Dishoeck, E., Vincent, F., von Fellenberg, S., Widmann, F., Wieprecht, E., Wiest, M., Wiezorrek, E., Yazici, S., Zins, G.
51 Oph is a Herbig Ae/Be star that exhibits strong near-infrared CO ro-vibrational emission at 2.3 micron, most likely originating in the innermost regions of a circumstellar disc. We aim to obtain the physical and geometrical properties of the syste
Externí odkaz:
http://arxiv.org/abs/2011.05955