Abstract
We present an image of T Tauri N reconstructed from speckle interferometry observations made at the 3.6 m Canada-Prance-Hawaii telescope (CFHT). Two spectral windows, at Hα [6540-6580 Å] and red continuum [6580-6840 Å] were used.
The star is unresolved in the continuum (θ ≤ 0”038), setting an upper limit for its size of ≤ 5.3 AU (assuming a 140 pc distance). At Hα (continuum subtracted) two components are observed, an unresolved one with 70 % of the Hα flux and a resolved 0” 106 × 0”043 (15 × 6 AU) with 30 %. The extended component is elongated in the North-South direction.
The extended Hα component scale, it's non-detection in the continuum, and TTau Hα profile shape suggest that the extension is a disk corona.
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© 1999 Springer Science+Business Media Dordrecht
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Garcia, P.J.V., Thiébaut, E. (1999). Extended (15 × 6 AU) Hα Emission Around T Tau N. In: Lago, M.T.V.T., Blanchard, A. (eds) The Non-Sleeping Universe. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4497-1_33
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DOI: https://doi.org/10.1007/978-94-011-4497-1_33
Publisher Name: Springer, Dordrecht
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