Zobrazeno 1 - 10
of 302
pro vyhledávání: '"St Louis, N."'
Autor:
Ignace, R, Bjorkman, J E, Chene, A-N, Erba, C, Fabiani, L, Moffat, A F J, Sincennes, R, St-Louis, N
Massive star winds are structured both stochastically ("clumps") and often coherently (Co-rotation Interaction Regions, or CIRs). Evidence for CIRs threading the winds of Wolf-Rayet (WR) stars arises from multiple diagnostics including linear polarim
Externí odkaz:
http://arxiv.org/abs/2309.10599
Autor:
Shenar, T., Wade, G. A., Marchant, P., Bagnulo, S., Bodensteiner, J., Bowman, D. M., Gilkis, A., Langer, N., Chene, A. -N., Oskinova, L., Van Reeth, T., Sana, H., St-Louis, N., de Oliveira, A. Soares, Todt, H., Toonen, S.
Magnetars are highly magnetized neutron stars; their formation mechanism is unknown. Hot helium-rich stars with spectra dominated by emission lines are known as Wolf-Rayet stars. We observe the binary system HD 45166 using spectropolarimetry, finding
Externí odkaz:
http://arxiv.org/abs/2308.08591
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:
Hawcroft, C., Sana, H., Mahy, L., Sundqvist, J. O., de Koter, A., Crowther, P. A., Bestenlehner, J. M., Brands, S. A., David-Uraz, A., Decin, L., Erba, C., Garcia, M., Hamann, W. -R., Herrero, A., Ignace, R., Kee, N. D., Kubátová, B., Lefever, R., Moffat, A., Najarro, F., Oskinova, L., Pauli, D., Prinja, R., Puls, J., Sander, A. A. C., Shenar, T., St-Louis, N., ud-Doula, A., Vink, J. S.
Publikováno v:
A&A 688, A105 (2024)
The winds of massive stars have an impact on stellar evolution and on the surrounding medium. The maximum speed reached by these outflows, the terminal wind speed, is a global wind parameter and an essential input for models of stellar atmospheres an
Externí odkaz:
http://arxiv.org/abs/2303.12165
The spectrum of the Wolf-Rayet (WR) star WR 63 contains spectral lines of two different O stars that show regular radial velocity (RV) variations with amplitudes of ~160 and ~225 km/s on a ~4.03 d period. The light-curve shows two narrow eclipses tha
Externí odkaz:
http://arxiv.org/abs/2208.02487
Autor:
St-Louis, N., Piaulet, C., Richardson, N. D., Shenar, T., Moffat, A. F. J., Eversberg, T., Hill, G. M., Gauza, B., Knapen, J. H., Kubat, J., Kubatova, B., Sablowski, D. P., Simon-Diaz, S., Bolduan, F., Dias, F. M., Dubreuil, P., Fuchs, D., Garrel, T., Grutzeck, G., Hunger, T., Kusters, D., Langenbrink, M., Leadbeater, R., Li, D., Lopez, A., Mauclaire, B., Moldenhawer, T., Potter, M., Santos, E. M. dos, Schanne, L., Schmidt, J., Sieske, H., Strachan, J., Stinner, E., Stinner, P., Stober, B., Strandbaek, K., Syder, T., Verilhac, D., Waldschlager, U., Weiss, D., Wendt, A.
We present the results of a four-month, spectroscopic campaign of the Wolf-Rayet dust-making binary, WR137. We detect only small-amplitude, random variability in the CIII5696 emission line and its integrated quantities (radial velocity, equivalent wi
Externí odkaz:
http://arxiv.org/abs/2007.09239
Akademický článek
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Autor:
Shenar, T., Sablowski, D. P., Hainich, R., Todt, H, Moffat, A. F. J., Oskinova, L. M., Ramachandran, V., Sana, H., Sander, A. A. C, Schnurr, O., St-Louis, N., Vanbeveren, D., Goetberg, Y., Hamann, W. -R.
Publikováno v:
A&A 641, C2 (2020)
Massive Wolf-Rayet (WR) stars dominate the radiative and mechanical energy budget of galaxies and probe a critical phase in the evolution of massive stars prior to core-collapse. It is not known whether core He-burning WR stars (classical WR, cWR) fo
Externí odkaz:
http://arxiv.org/abs/1905.09296
Autor:
Chené, A. -N., St-Louis, N., Moffat, A. F. J., Schnurr, O., Crowther, P. A., Wade, G. A., Richardson, N. D., Baranec, C., Ziegler, C. A., Law, N. M., Riddle, R., Rate, G. A., Artigau, É., Alecian, E., collaboration, BinaMIcS
Publikováno v:
MNRAS, 484, 5834 (2019)
The hot WN star WR2 (HD6327) has been claimed to have many singular characteristics. To explain its unusually rounded and relatively weak emission line profiles, it has been proposed that WR2 is rotating close to break-up with a magnetically confined
Externí odkaz:
http://arxiv.org/abs/1905.05815
Akademický článek
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