Výsledky vyhledávání

Linking chromospheric activity and magnetic field properties for late-type dwarf stars

Autor: E L Brown, S V Jeffers, S C Marsden, J Morin, S Boro Saikia, P Petit, M M Jardine, V See, A A Vidotto, M W Mengel, M N Dahlkemper, null the BCool Collaboration

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 514(3), 4300-4319
Monthly Notices of the Royal Astronomical Society, 2022, 514 (3), pp.4300-4319. ⟨10.1093/mnras/stac1291⟩

Spectropolarimetric data allow for simultaneous monitoring of stellar chromospheric $\log{R^{\prime}_{\rm{HK}}}$ activity and the surface-averaged longitudinal magnetic field, $B_l$, giving the opportunity to probe the relationship between large-scal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70e9c437c42a9d26cc91dec381f75ec3
https://hdl.handle.net/10023/25360

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The relation between stellar magnetic field geometry and chromospheric activity cycles - II The rapid 120-day magnetic cycle of τ Bootis

Autor: S V Jeffers, M Mengel, C Moutou, S C Marsden, J R Barnes, M M Jardine, P Petit, J H M M Schmitt, V See, A A Vidotto, null BCool collaboration

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2018, 479, pp.5266-5271. ⟨10.1093/mnras/sty1717⟩

One of the aims of the BCool programme is to search for cycles in other stars and to understand how similar they are to the Sun. In this paper we aim to monitor the evolution of $\tau$ Boo's large-scale magnetic field using high-cadence observations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74343149beadc63daa68fa8a26ac16cf
https://hal-insu.archives-ouvertes.fr/insu-03678170/file/sty1717.pdf

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Rotation and activity in the brightest COUP stars

Autor: G. A. J. Hussain, H. C. Stempels, M. M. Jardine, A. Collier Cameron, F. Favata, Eric Stempels

Publikováno v: AIP Conference Proceedings.

Using the FLAMES multi‐object spectrometric facility of the 8.2 m VLT/UT2, we have obtained high‐resolution spectra of 100 young, low and intermediate mass pre‐main‐sequence stars in the Orion Nebula Cluster. The X‐ray properties of all our

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d6e208c7bee280a1cb9015451ea8d07
https://doi.org/10.1063/1.3099185

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Large-scale magnetic topologies of M dwarfs

Autor: J. Morin, J.-R. Donati, X. Delfosse, T. Forveille, M. M. Jardine, Eric Stempels

We present here the first results of a spectropolarimetric analysis of a small sample (about 20) of active stars ranging from spectral type M0 to M8, which are either fully-convective or possess a very small radiative core. This study aims at providi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9aa143e3a91ead74530c86c8862425dc
http://arxiv.org/abs/0809.4564

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