Zobrazeno 1 - 10
of 480
pro vyhledávání: '"Fares, R"'
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:
Bellotti, S., Fares, R., Vidotto, A. A., Morin, J., Petit, P., Hussain, G. A. J., Bourrier, V., Donati, J. F., Moutou, C., Hebrard, E.
Publikováno v:
A&A 676, A139 (2023)
The space environment in which planets are embedded depends mainly on the host star and impacts the evolution of the planetary atmosphere. The quiet M dwarf GJ 436 hosts a close-in hot Neptune which is known to feature a comet-like tail of hydrogen a
Externí odkaz:
http://arxiv.org/abs/2306.15391
We present a magnetic activity study of GJ 436 using spectroscopic data from HARPS, spanning over 14 years, and additional data from NARVAL, falling within the HARPS observations. We study the CaII H&K, HeID3, NaI doublet, H$\alpha$ and CaII IRT trip
Externí odkaz:
http://arxiv.org/abs/2209.11258
Autor:
Strugarek, A., Fares, R., Bourrier, V., Brun, A. S., Réville, V., Amari, T., Helling, Ch., Jardine, M., Llama, J., Moutou, C., Vidotto, A. A., Wheatley, P. J., Zarka, P.
Magnetic interactions between stars and close-in planets may lead to a detectable signal on the stellar disk. HD 189733 is one of the key exosystems thought to harbor magnetic interactions, which may have been detected in August 2013. We present a se
Externí odkaz:
http://arxiv.org/abs/2203.10956
Publikováno v:
2021MNRAS.tmp..352L
The helicity of a magnetic field is a fundamental property that is conserved in ideal MHD. It can be explored in the stellar context by mapping large-scale magnetic fields across stellar surfaces using Zeeman-Doppler imaging. A recent study of 51 sta
Externí odkaz:
http://arxiv.org/abs/2102.11238
Autor:
Lund, K., Jardine, M., Lehmann, L. T., Mackay, D. H., See, V., Vidotto, A. A., Donati, J. -F., Fares, R., Folsom, C. P., Jeffers, S. V., Marsden, S. C., Morin, J., Petit, P.
Helicity is a fundamental property of a magnetic field but to date it has only been possible to observe its evolution in one star - the Sun. In this paper we provide a simple technique for mapping the large-scale helicity density across the surface o
Externí odkaz:
http://arxiv.org/abs/2001.11749
Autor:
Bourrier, V., Wheatley, P. J., Etangs, A. Lecavelier des, King, G., Louden, T., Ehrenreich, D., Fares, R., Helling, Ch., Llama, J., Jardine, M. M., Vidotto, A. A.
In this third paper of the MOVES (Multiwavelength Observations of an eVaporating Exoplanet and its Star) programme, we combine Hubble Space Telescope far-ultraviolet observations with XMM-Newton/Swift X-ray observations to measure the emission of HD
Externí odkaz:
http://arxiv.org/abs/2001.11048
Autor:
Kavanagh, R. D., Vidotto, A. A., Fionnagáin, D. Ó, Bourrier, V., Fares, R., Jardine, M., Helling, Ch., Moutou, C., Llama, J., Wheatley, P. J.
Publikováno v:
Proc. IAU 15 (2019) 305-309
The hot Jupiter HD189733b is expected to be a source of strong radio emission, due to its close proximity to its magnetically active host star. Here, we model the stellar wind of its host star, based on reconstructed surface stellar magnetic field ma
Externí odkaz:
http://arxiv.org/abs/1910.13350
Autor:
Fares, R., Gangloff, B.
Publikováno v:
In Psychologie du travail et des organisations September 2023 29(3):139-150
Autor:
Kavanagh, R. D., Vidotto, A. A., Fionnagáin, D. Ó, Bourrier, V., Fares, R., Jardine, M., Helling, Ch., Moutou, C., Llama, J., Wheatley, P. J.
We present stellar wind modelling of the hot Jupiter host HD189733, and predict radio emission from the stellar wind and the planet, the latter arising from the interaction of the stellar wind with the planetary magnetosphere. Our stellar wind models
Externí odkaz:
http://arxiv.org/abs/1903.01809