Zobrazeno 1 - 10
of 1 093
pro vyhledávání: '"Petit, V"'
Autor:
Semenko, E., Kochukhov, O., Mikulášek, Z., Wade, G. A., Alecian, E., Bohlender, D., Das, B., Feliz, D. L., Janík, J., Kolař, J., Krtička, J., Kudryavtsev, D. O., Labadie-Bartz, J. M., Mkrtichian, D., Monin, D., Petit, V., Romanyuk, I. I., Shultz, M. E., Shulyak, D., Siverd, R. J., Tkachenko, A., Yakunin, I. A., Zejda, M., collaboration, the BinaMIcS
We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival observational data, we characterise the system and its components, includi
Externí odkaz:
http://arxiv.org/abs/2411.05376
Autor:
Erba, C., Folsom, C. P., David-Uraz, A., Wade, G. A., Seadrow, S., Bellotti, S., Fossati, L., Petit, V., Shultz, M. E.
HD 54879 is the most recently discovered magnetic O-type star. Previous studies ruled out a rotation period shorter than 7 years, implying that HD 54879 is the second most slowly-rotating known magnetic O-type star. We report new high-resolution spec
Externí odkaz:
http://arxiv.org/abs/2401.09722
Autor:
Das, B., Petit, V., Nazé, Y., Corcoran, M. F., Cohen, D. H., Biswas, A., Chandra, P., David-Uraz, A., Leutenegger, M. A., Neiner, C., Pablo, H., Paunzen, E., Shultz, M. E., ud-Doula, A., Wade, G. A.
We report detailed X-ray observations of the unique binary system $\epsilon$ Lupi, the only known short-period binary consisting of two magnetic early-type stars. The components have comparably strong, but anti-aligned magnetic fields. The orbital an
Externí odkaz:
http://arxiv.org/abs/2304.12882
Autor:
Keszthelyi, Z., de Koter, A., Götberg, Y., Meynet, G., Brands, S. A., Petit, V., Carrington, M., David-Uraz, A., Geen, S. T., Georgy, C., Hirschi, R., Puls, J., Ramalatswa, K. J., Shultz, M. E., ud-Doula, A.
Magnetism can greatly impact the evolution of stars. In some stars with OBA spectral types there is direct evidence via the Zeeman effect for stable, large-scale magnetospheres, which lead to the spin-down of the stellar surface and reduced mass loss
Externí odkaz:
http://arxiv.org/abs/2211.07060
Autor:
Keszthelyi, Z., de Koter, A., Götberg, Y., Meynet, G., Brands, S. A., Petit, V., Carrington, M., David-Uraz, A., Geen, S. T., Georgy, C., Hirschi, R., Puls, J., Ramalatswa, K. J., Shultz, M. E., ud-Doula, A.
Magnetic fields can drastically change predictions of evolutionary models of massive stars via mass-loss quenching, magnetic braking, and efficient angular momentum transport, which we aim to quantify in this work. We use the MESA software instrument
Externí odkaz:
http://arxiv.org/abs/2209.06350
Autor:
Shultz, M. E., Casini, R., Cheung, M. C. M., David-Uraz, A., Alemán, T. del Pino, Erba, C., Folsom, C. P., Gayley, K., Ignace, R., Keszthelyi, Z., Kochukhov, O., Nazé, Y., Neiner, C., Oksala, M., Petit, V., Scowen, P. A., Sudnik, N., ud-Doula, A., Vink, J. S., Wade, G. A.
Polstar is a proposed NASA MIDEX space telescope that will provide high-resolution, simultaneous full-Stokes spectropolarimetry in the far ultraviolet, together with low-resolution linear polarimetry in the near ultraviolet. This observatory offers u
Externí odkaz:
http://arxiv.org/abs/2207.12970
Autor:
Folsom, C. P., Ignace, R., Erba, C., Casini, R., Alemán, T. del Pino, Gayley, K., Hobbs, K., Sainz, R. Manso, Neiner, C., Petit, V., Shultz, M. E., Wade, G. A.
Magnetic fields are important for stellar photospheres and magnetospheres, influencing photospheric physics and sculpting stellar winds. Observations of stellar magnetic fields are typically made in the visible, although infrared observations are bec
Externí odkaz:
http://arxiv.org/abs/2207.01865
What leads to premature upper cut-off frequencies of auroral radio emission from hot magnetic stars?
Recently a large number of hot magnetic stars have been discovered to produce auroral radio emission by the process of electron cyclotron maser emission (ECME). Such stars have been given the name of Main-sequence Radio Pulse emitters (MRPs). The phe
Externí odkaz:
http://arxiv.org/abs/2207.00470
Autor:
ud-Doula, Asif, Cheung, M. C. M., David-Uraz, A., Erba, C., Folsom, C. P., Gayley, K., Naze, Y., Neiner, C., Petit, V., Prinja, R., Shultz, M. E., Sudnik, N., Vink, J. S., Wade, G. A.
Several space missions and instruments for UV spectropolarimetry are in preparation, such as the proposed NASA MIDEX Polstar project, the proposed ESA M mission Arago, and the Pollux instrument on the future LUVOIR-like NASA flagship mission. In the
Externí odkaz:
http://arxiv.org/abs/2206.12838
Autor:
Manier, A., Seunes, C., Broucqsault, D., Verhaeghe, M., Behal, H., Petit, V., Hannebicque, G.
Publikováno v:
In Annales de cardiologie et d'angéiologie November 2024 73(5)
