Young stars and Educational outreach -- Oral Presentation
A Hot Wind from TW Hya: Implications for X-rays
Andrea Dupree, CfA
Nancy Brickhouse (CfA)
The nearby T Tauri star, TW Hya exhibits far ultraviolet and
infrared emission lines with a P Cygni shape that signal the presence of
a continuous, fast (400 km/s), hot (300,000 K) accelerating outflow with
a mass loss rate $10^{-11} - 10^{-12}$ solar masses per year or larger
(Dupree, Brickhouse, Smith, Strader, 2005, ApJ Letters in press).
Because TW Hya has a low inclination, and the surrounding accretion disk
is face-on, the stellar polar regions are observed directly. We consider
the emission measure distribution of the star, the sources of the
emission and implications for the origin of the X-rays.