Unraveling the variability of σ Ori E

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00455509" target="_blank" >RIV/67985815:_____/14:00455509 - 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>

Result language
angličtina
Original language name
Unraveling the variability of σ 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 σ Ori E is dominated by eclipse features due 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 σ 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 observations.
Czech name
—
Czech description
—

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry
ISBN
9781107078581
ISSN
1743-9213
e-ISSN
—
Number of pages
5
Pages from-to
348-352
Publisher name
Cambridge University Press
Place of publication
Cambridge
Event location
Geneva
Event date
Jun 23, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000453211700088

Similar results(10)