| DOI | Trouver le DOI : https://doi.org/10.1017/S174392131400235X |
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| Auteur | Rechercher : Yakunin, I.; Rechercher : Wade, G.; Rechercher : Bohlender, D.1; Rechercher : Kochukhov, O.; Rechercher : Tsymbal, V. |
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| Affiliation | - Conseil national de recherches du Canada. Infrastructure scientifique nationale
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| Format | Texte, Article |
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| Conférence | International Astronomical Union Symposium 302: Magnetic fields throughout stellar evolution, August 25-30, 2013, Biarritz, France |
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| Résumé | We have employed an extensive new timeseries of Stokes I and V spectra obtained with the ESPaDOnS spectropolarimeter at the 3.6-m Canada-France-Hawaii Telescope to investigate the physical parameters, chemical abundance distributions and magnetic field topology of the slowly-rotating He-strong star HD 184927. We infer a rotation period of 9d.53071 ± 0.00120 from Hα, Hβ, LSD magnetic measurements and EWs of helium lines. We used an extensive NLTE TLUSTY grid along with the SYNSPEC code to model the observed spectra and find a new value of luminosity. In this poster we present the derived physical parameters of the star and the results of Magnetic Doppler Imaging analysis of the Stokes I and V profiles. Wide wings of helium lines can be described only under the assumption of the presence of a large, very helium-rich spot. |
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| Date de publication | 2014-08-07 |
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| Maison d’édition | Cambridge University Press |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21272721 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 1dc2ab0f-895a-415f-a8bc-212c056ce68a |
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| Enregistrement créé | 2014-12-03 |
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| Enregistrement modifié | 2020-04-22 |
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