Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..80..473s&link_type=abstract
Astrophysics and Space Science, vol. 80, no. 2, Dec. 1981, p. 473-476.
Astronomy and Astrophysics
Astrophysics
5
Calcium, Emission Spectra, H Alpha Line, Polarization Characteristics, Taurus Constellation, Variable Stars, Flare Stars, Line Spectra, Magnetic Flux, Silicates, Stellar Magnetic Fields, Ultraviolet Spectra, X Ray Spectra
Scientific paper
On the basis of the correlation between polarization and emission features observed in certain T-Tauri stars, it is concluded that flaring effects associated with UV and/or X-ray irradiation and with increased magnetic field are responsible for the intrinsic polarization changes in T-Tauri stars. The correlation between emission Ca II lines and polarization degree both in Miras and T-Tau stars is thought to support the contention that the intrinsic polarization changes are due to the irradiation of silicate-like grains. In some T-Tau stars the increase in the magnetic field can be the principal agent causing the polarization increase due to the enhanced orientation of elongated grains.
Solc Martin
Svatos Jan
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