Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111..918p&link_type=abstract
Astronomical Journal v.111, p.918
Astronomy and Astrophysics
Astronomy
31
Radio Continuum: Stars, Stars: Low-Mass, Stars: Pre-Main Sequence
Scientific paper
The pre-main-sequence multiple system HD 283447, one of the brightest T Tauri objects in the Taurus-Auriga complex, is a luminous nonthermal stellar radio source. it is a very young system with properties intermediate between classical and weak-lined T Tauri stars. We report a series of simultaneous VLBI/VLA observations which confirm earlier evidence for complex radio-emitting structures which are resolved only with VLBI. These structures at times achieve ˜⅓AU in extent, and, in one epoch, a double radio source corresponds well with the projected orbital separation for the inner binary. Both K stars in the close binary appear to be active radio stars. Circular and linear polarization are seen in the continuum radio emission from HD 283447. The presence of linearly polarized nonthermal radiation provides evidence for a higher-energy electron population than previously deduced from emission from any other nonthermal stellar radio source.
Deeney Bryan D.
Feigelson Eric D.
Lonsdale Colin J.
Phillips Robert B.
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