Polarized hydrogen emission lines in Mira stars: a mystery behind the shock

Abstract We present a full spectropolarimetric study (in the Stokes parameters I, Q, U and V) on omicron Ceti (the prototype of Mira stars), and focus on the strong polarization detected in Balmer emission lines. This study is made with observations from NARVAL instrument at TBL (Telescope Bernard L...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union
Main Authors: Fabas, Nicolas, Lèbre, Agnès, Gillet, Denis
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2008
Subjects:
Astronomy and Astrophysics
Space and Planetary Science
Mira
narval
Online Access:http://dx.doi.org/10.1017/s1743921309031007
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1743921309031007
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Summary:Abstract We present a full spectropolarimetric study (in the Stokes parameters I, Q, U and V) on omicron Ceti (the prototype of Mira stars), and focus on the strong polarization detected in Balmer emission lines. This study is made with observations from NARVAL instrument at TBL (Telescope Bernard Lyot) in Pic du Midi Observatory, France.

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