Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-22T18:20:20.649Z Has data issue: false hasContentIssue false
  • English
  • Français

Stellar magnetic fields from four Stokes parameter observations

Published online by Cambridge University Press:  23 January 2015

N. Rusomarov ,
O. Kochukhov  and
N. Piskunov
N. Rusomarov
Affiliation:
Uppsala University email: [email protected]
O. Kochukhov
Affiliation:
Uppsala University email: [email protected]
N. Piskunov
Affiliation:
Uppsala University email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Magnetic Doppler imaging (MDI) from observations of four Stokes parameters can uncover new information that is of interest to the evolution and structure of magnetic fields of intermediate and high-mass stars. Our MDI study of the chemically peculiar star HD 24712 from four Stokes parameter observations, obtained with the HARPSpol instrument at the 3.6-m ESO telescope, revealed a magnetic field with strong dipolar component and weak small-scale contributions. This finding gives evidence for the hypothesis that old Ap stars have predominantly dipolar magnetic fields.

Keywords

stars: magnetic fieldsstars: atmospheresstars: chemically peculiarstars: imaging
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 395 - 396
Copyright
Copyright © International Astronomical Union 2015 

References

Braithwaite, J. & Nordlund, Å. 2006, A&A 450, 1077Google Scholar
Kochukhov, O., Bagnulo, S., Wade, G. A., et al. 2004, A&A 414, 613Google Scholar
Kochukhov, O. & Wade, G. A. 2010, A&A 513, A13Google Scholar
Rusomarov, N., Kochukhov, O., Piskunov, N., et al. 2013, A&A 558, A8Google Scholar
Silvester, J., Kochukhov, O., & Wade, G. A. 2014, MNRAS 440, 182Google Scholar