A linear polarization survey of T Tauri stars

Details A linear polarization survey of T Tauri stars A linear polarization survey of T Tauri stars

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26as...48..153b&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 48, Apr. 1982, p. 153-164. Research supported by the National Research Counc

Astronomy and Astrophysics

Astrophysics

111

Cosmic Dust, Linear Polarization, Stellar Envelopes, T Tauri Stars, Hertzsprung-Russell Diagram, Infrared Radiation, Polarimetry, Statistical Correlation, Stellar Luminosity, Stellar Radiation

Scientific paper

Polarization variability has been detected in at least 35% of the stars for which two or more observations are available, in the course of a two-band linear polarization survey of T Tauri stars, brighter than about 13th magnitude and north of -30 deg declination, from 1976 to 1979. A search for correlations between polarization and other observable properties by means of statistical analysis has established them for the cases of: (1) the color excess E(B-V), (2) average IR color indices, and (3) the position of the stars in the HR diagram. It is indicated by the correlations with the IR color indices that the 3.5-micron and longward color excess may be due to the absorption of stellar radiation by dust, and its reemission in the IR, for at least 25% of the stars.

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