Sökning: onr:"swepub:oai:research.chalmers.se:8f3a0b50-a80c-41cb-9d3a-ff52a143b33d" >
VLBA SiO maser obse...
-
Amiri, N.Universiteit Leiden (UL),Leiden University (UL)
(författare)
VLBA SiO maser observations of the OH/IR star OH 44.8-2.3: magnetic field and morphology
- Artikel/kapitelEngelska2012
Förlag, utgivningsår, omfång ...
Nummerbeteckningar
-
LIBRIS-ID:oai:research.chalmers.se:8f3a0b50-a80c-41cb-9d3a-ff52a143b33d
-
https://research.chalmers.se/publication/165253URI
-
https://doi.org/10.1017/S1743921312006631DOI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:kon swepub-publicationtype
-
Ämneskategori:ref swepub-contenttype
Anmärkningar
-
We report on Very Long Baseline Array SiO maser observations of the OH/IR star OH 44.8 - 2.3. The observations show that the maser features form a ring located at a distance of 5.4 AU around the central star. The masers show high fractional linear polarization up to 100%. The polarization vectors are consistent with a dipole field morphology. Additionally, we report a tentative detection of circular polarization of 7% for the brightest maser feature. This indicates a magnetic field of 1.5 ± 0.3 G. The SiO masers and the 1612 MHz OH masers suggest a mildly preferred outflow direction in the circumstellar environment of this star. The observed polarization is consistent with magnetic field structures along the preferred outflow direction. This could indicate the possible role of the magnetic fields in shaping the circumstellar environment of this object.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Vlemmings, Wouter,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)wouterv
(författare)
-
Kemball, A.Joint Institute for VLBI in Europe (JIVE)
(författare)
-
van Langevelde, H. J.University of Illinois
(författare)
-
Universiteit Leiden (UL)Chalmers tekniska högskola
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Proceedings of the International Astronomical Union8:5287, s. 54-581743-92131743-9221
Internetlänk
Hitta via bibliotek
Till lärosätets databas