Other
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apjs...59..277b&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 59, Oct. 1985, p. 277-291. Research supported by the National Res
Other
65
Astrometry, Linear Polarization, Southern Sky, T Tauri Stars, Cosmic Dust, Hertzsprung-Russell Diagram, Spectral Correlation, Stellar Envelopes
Scientific paper
The linear polarization survey of T Tauri stars brighter than about 13th magnitude and north of - 30 deg declination which was given in Bastein (1982) has been extended to cover the southern hemisphere. New measurements of stars already observed in the first part of the survey are also given. Polarization variability is confirmed to be a common phenomenon in T Tauri stars. The rapid polarization variations which are observed in some stars are best explained by changes in the illumination of the dust. The absence of correlations between polarization and many other properties is reported in a sample of 85 stars. Correlations have been found between polarization and (1) infrared excesses, (2) He I, and (3) forbidden O I equivalent widths. A detailed analysis of stars for which the wavelength dependence was measured is presented.
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