ATLAS OF HIGH-RESOLUTION EMISSION AND SHELL LINES IN BE STARS - LINE-PROFILES AND SHORT-TERM VARIABILITY

We present an atlas of high-SIN, high-resolution (Delta upsilon less t han or equal to 6 km s(-1)) data of Be star emission and shell profile s. We have collected profiles of H alpha and of Fe II, mostly of the l ambda 5317 transition. These lines have been selected to provide measu res for the overall emission strength and for the velocity field in th ese disks. We have collected data for 77 southern and equatorial progr amme stars, covering the period 1982-1993. This is the most comprehens ive overview of profile shapes in Be disks. We propose a three-dimensi onal scheme in which most observed profiles can be classified. The par ameters are i) inclination, ii) optical depth, and iii) the pattern of the velocity field. A search for short-term variability (timescales b etween five days and a few minutes) in six stars ended with negative r esult. Shortest observed timescale for variability is a few days for w ell-developed disks in binary systems (HR 1910, HR 2142).