Revisiting the rigidly rotating magnetosphere model for sigma Ori E ? II. Magnetic Doppler imaging, arbitrary field RRM, and light variability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00080839" target="_blank" >RIV/00216224:14310/15:00080839 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985815:_____/15:00449355

Výsledek na webu

<a href="http://dx.doi.org/10.1093/mnras/stv1086" target="_blank" >http://dx.doi.org/10.1093/mnras/stv1086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stv1086" target="_blank" >10.1093/mnras/stv1086</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Revisiting the rigidly rotating magnetosphere model for sigma Ori E ? II. Magnetic Doppler imaging, arbitrary field RRM, and light variability

Popis výsledku v původním jazyce

The initial success of the Rigidly Rotating Magnetosphere (RRM) model application to the B2Vp star sigma Ori E by Townsend, Owocki and Groote triggered a renewed era of observational monitoring of this archetypal object. We utilize high-resolution spectropolarimetry and the magnetic Doppler imaging (MDI) technique to simultaneously determine the magnetic configuration, which is predominately dipolar, with a polar strength Bd = 7.3?7.8 kG and a smaller non-axisymmetric quadrupolar contribution, as well as the surface distribution of abundance of He, Fe, C, and Si. We describe a revised RRM model that now accepts an arbitrary surface magnetic field configuration, with the field topology from the MDI models used as input. The resulting synthetic H alpha emission and broad-band photometric observations generally agree with observations, however, several features are poorly fit.

Název v anglickém jazyce

Revisiting the rigidly rotating magnetosphere model for sigma Ori E ? II. Magnetic Doppler imaging, arbitrary field RRM, and light variability

Popis výsledku anglicky

The initial success of the Rigidly Rotating Magnetosphere (RRM) model application to the B2Vp star sigma Ori E by Townsend, Owocki and Groote triggered a renewed era of observational monitoring of this archetypal object. We utilize high-resolution spectropolarimetry and the magnetic Doppler imaging (MDI) technique to simultaneously determine the magnetic configuration, which is predominately dipolar, with a polar strength Bd = 7.3?7.8 kG and a smaller non-axisymmetric quadrupolar contribution, as well as the surface distribution of abundance of He, Fe, C, and Si. We describe a revised RRM model that now accepts an arbitrary surface magnetic field configuration, with the field topology from the MDI models used as input. The resulting synthetic H alpha emission and broad-band photometric observations generally agree with observations, however, several features are poorly fit.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP209%2F12%2F0217" target="_blank" >GAP209/12/0217: Multispektrální proměnnost horkých hvězd a její příčiny</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

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Svazek periodika

451

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

2015-2029

Kód UT WoS článku

000360830000066

EID výsledku v databázi Scopus

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