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astro-ph2000
Timescales of disk evolution and planet formation
W. Brandner, H. Zinnecker, J. M. Alcala +7
We present high-spatial resolution HST and adaptive optics observations, and high-sensitivity ISO (ISOCAM & ISOPHOT) observations of a sample of X-ray selected weak-line (WTTS) and…
astro-ph2000
The distance to the nearest star-forming clouds: MBM12 and MBM20
T. Hearty, M. Fernandez, J. M. Alcala +2
We present high-resolution spectra (R ~ 49,000) of stars that have parallax measurements from the Hipparcos satellite and are projected along the line of sight to the two nearest k…