Spectropolarimetry of magnetic stars. I - Diagnostic contents of Stokes I and V line profiles

Details Spectropolarimetry of magnetic stars. I - Diagnostic contents of Stokes I and V line profiles Spectropolarimetry of magnetic stars. I - Diagnostic contents of Stokes I and V line profiles

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168..184m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 184-196.

Astronomy and Astrophysics

Astrophysics

26

Line Shape, Magnetic Stars, Polarimetry, Stellar Spectra, Stokes Law Of Radiation, Spectral Line Width, Stellar Temperature, Zeeman Effect

Scientific paper

Observations of HD 147010, obtained with the Zeeman analyzer of the Cassegrain Echelle Spectrograph and the 3.6-m telescope of the La Silla ESO, are used to investigate the diagnostic contents of the Stokes I and V spectra for magnetic stars. A statistical study of 16 Fe II lines and 5 Si II lines is presented, and average values of the surface magnetic field and its line of sight component are derived. It is found that the I and V spectra are not weighted in the same way across the stellar disk, and that large variations of the temperature and density structure of the atmosphere over the stellar surface must exist.

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