Unraveling the variability of sigma Ori E
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F15%3A00082496" target="_blank" >RIV/00216224:14310/15:00082496 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1017/S1743921314007066" target="_blank" >http://dx.doi.org/10.1017/S1743921314007066</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1743921314007066" target="_blank" >10.1017/S1743921314007066</a>
Alternative languages
Result language
angličtina
Original language name
Unraveling the variability of sigma Ori E
Original language description
Sigma Ori E (HD 37479) is the prototypical helium-strong star shown to harbor a strong magnetic field, as well as a magnetosphere consisting of two clouds of plasma. The observed optical (ubvy) light curve of sigma Ori E is dominated by eclipse featuresdue to circumstellar material, however, there remain additional features unexplained by the Rigidly Rotating Magnetosphere (RRM) model of Townsend & Owocki (2005). Using the technique of magnetic Doppler imaging (MDI), spectropolarimetric observations of sigma Ori E are used to produce maps of both the magnetic field topology and various elemental abundance distributions. We also present an analysis utilizing these computed MDI maps in conjunction with non-local thermodynamical equilibrium TLUSTY models to study the optical brightness variability of this star arising from surface inhomogeneities. It has been suggested that this physical phenomena may be responsible for the light curve inconsistencies between the model and observatio
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry
ISBN
9781107078581
ISSN
1743-9213
e-ISSN
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Number of pages
5
Pages from-to
348-352
Publisher name
International Astronomical Union
Place of publication
Cambridge, UK
Event location
Ženeva, Švýcarsko
Event date
Jan 1, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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