Linear polarization of T Tauri stars. I - Variability of southern stars

Details Linear polarization of T Tauri stars. I - Variability of southern stars Linear polarization of T Tauri stars. I - Variability of southern stars

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97..814d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, March 1989, p. 814-821. Research supported by the Space Telescope Science Instit

Astronomy and Astrophysics

Astronomy

27

Linear Polarization, Southern Sky, T Tauri Stars, Variable Stars, Astronomical Photometry, Cosmic Dust, Stellar Envelopes, Time Dependence

Scientific paper

Linear polarization data are presented for 21 T Tauri stars. Seven of these stars have been closely monitored to assess their variability. It is found that the majority of T Tauri stars are variable in linear polarization. The observations of RY Lup do not show the 3.7-day periodicity reported by Bastien et al. (1987, 1989). A possible 3.65-day periodicity is found for RU Lup. The results suggest that the rotating spots or dust condensations in orbital movement that are responsible for the periods or pseudoperiods observed in T Tauri stars are not stable.

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