Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Bellotti, S."'
Autor:
Callingham, J. R., Pope, B. J. S., Kavanagh, R. D., Bellotti, S., Daley-Yates, S., Damasso, M., Grießmeier, J. -M., Güdel, M., Günther, M., Kao, M. M., Klein, B., Mahadevan, S., Morin, J., Nichols, J. D., Osten, R. A., Pérez-Torres, M., Pineda, J. S., Rigney, J., Saur, J., Stefánsson, G., Turner, J. D., Vedantham, H., Vidotto, A. A., Villadsen, J., Zarka, P.
Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets, information that is difficult to attain at other wavelengths. There have been recent advances observing aurora
Externí odkaz:
http://arxiv.org/abs/2409.15507
Autor:
Zaire, B., Donati, J. -F., Alencar, S. P., Bouvier, J., Moutou, C., Bellotti, S., Carmona, A., Petit, P., Kóspál, Á., Shang, H., Grankin, K., Manara, C., Alecian, E., Gregory, S. P., Fouqué, P., consortium, the SLS
This paper analyses spectropolarimetric observations of the classical T Tauri star (CTTS) GM Aurigae collected with SPIRou, the near-infrared spectropolarimeter at the Canada-France-Hawaii Telescope, as part of the SLS and SPICE Large Programs. We re
Externí odkaz:
http://arxiv.org/abs/2408.05864
Autor:
Bellotti, S., Evensberget, D., Vidotto, A. A., Lavail, A., Lueftinger, T., Hussain, G. A. J., Morin, J., Petit, P., Saikia, S. Boro, Danielski, C., Micela, G.
The accurate characterisation of the stellar magnetism of planetary host stars has been gaining momentum, especially in the context of transmission spectroscopy investigations of exoplanets. Indeed, the magnetic field regulates the amount of energeti
Externí odkaz:
http://arxiv.org/abs/2405.19052
Autor:
Bellotti, S., Morin, J., Lehmann, L. T., Petit, P., Hussain, G. A. J., Donati, J. -F., Folsom, C. P., Carmona, A., Martioli, E., Klein, B., Fouque, P., Moutou, C., Alencar, S., Artigau, E., Boisse, I., Bouchy, F., Bouvier, J., Cook, N. J., Delfosse, X., Doyon, R., Hebrard, G.
Dynamo models of stellar magnetic fields for partly and fully convective stars are guided by observational constraints. Zeeman-Doppler imaging has revealed a variety of magnetic field geometries and, for fully convective stars in particular, a dichot
Externí odkaz:
http://arxiv.org/abs/2403.08590
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:
Tsvetkova, S., Morin, J., Folsom, C. P., Bouquin, J. -B. Le, Alecian, E., Bellotti, S., Hussain, G., Kochukhov, O., Marsden, S. C., Neiner, C., Petit, P., Wade, G. A., collaboration, the BinaMIcS
This work is part of the BinaMIcS project, the aim of which is to understand the interaction between binarity and magnetism in close binary systems. All the studied spectroscopic binaries targeted by the BinaMIcS project encompass hot massive and int
Externí odkaz:
http://arxiv.org/abs/2312.04247
Autor:
Lehmann, L. T., Donati, J. -F., Fouque, P., Moutou, C., Bellotti, S., Delfosse, X., Petit, P., Carmona, A., Morin, J., Vidotto, A. A., consortium, the SLS
In this paper, we study six slowly rotating mid-to-late M~dwarfs (rotation period $P_{\mathrm{rot}} \approx 40-190\,\mathrm{dy}$) by analysing spectropolarimetric data collected with SPIRou at the Canada-France-Hawaii Telescope as part of the SPIRou
Externí odkaz:
http://arxiv.org/abs/2311.05039
Autor:
Crozet, P., Morin, J., Ross, A. J., Bellotti, S., Donati, J. F., Fouqué, P., Moutou, C., Petit, P., Carmona, A., Kóspál, A., Adam, A. G., Tokaryk, D. W.
Molecular bands of metal oxides and hydrides dominate the optical and near-infrared spectra of M dwarfs. High-resolution spectra of these bands have immense potential for determining many properties of these stars, such as effective temperature, surf
Externí odkaz:
http://arxiv.org/abs/2310.04497
Autor:
Vidotto, A. A., Bourrier, V., Fares, R., Bellotti, S., Donati, J. F., Petit, P., Hussain, G. A. J., Morin, J.
Publikováno v:
A&A 678, A152 (2023)
The M dwarf star GJ 436 hosts a warm-Neptune that is losing substantial amount of atmosphere, which is then shaped by the interactions with the wind of the host star. The stellar wind is formed by particles and magnetic fields that shape the exo-spac
Externí odkaz:
http://arxiv.org/abs/2309.00324
Autor:
Moutou, C., Delfosse, X., Petit, A. C., Donati, J. -F., Artigau, E., Fouque, P., Carmona, A., Ould-Elhkim, M., Arnold, L., Cook, N. J., Cadieux, C., Bellotti, S., Boisse, I., Bouchy, F., Charpentier, P., Cortes-Zuleta, P., Doyon, R., Hebrard, G., Martioli, E., Morin, J., Vandal, T.
SPIRou is a near-infrared spectropolarimeter and a high-precision velocimeter. The SPIRou Legacy Survey collected data from February 2019 to June 2022, half of the time devoted to a blind search for exoplanets around nearby cool stars. The aim of thi
Externí odkaz:
http://arxiv.org/abs/2307.11569