Millimeter polarimetry of star-forming regions : magnetic field structure and low mass stars

Tamura, M., Hayashi, S. and Hough, J. (1995) Millimeter polarimetry of star-forming regions : magnetic field structure and low mass stars. Astrophysics and Space Science (1-2). pp. 21-24. ISSN 0004-640X
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We have measured polarization of the 1.1 mm and 0.8 mm continuum emission for 3 pre-T Tauri stars and 2 T Tauri stars. Positive detections were made for NGC 1333 IRAS 4 and IRAS 16293-2422, while L1551 IRS 5 and HL Tau were only marginally detected. For GG Tau we measured a 2? upper limit of 3%. The polarization is interpreted in terms of thermal emission by magnetically aligned dust grains in circumstellar disks or envelopes. We have found a definite geometrical relation between the polarization and other circumstellar structure.

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