Free access
Issue
Astron. Astrophys. Suppl. Ser.
Volume 116, Number 2, April_II 1996
Page(s) 309 - 358
DOI http://dx.doi.org/10.1051/aas:1996117
Atlas of high-resolution emission and shell lines in Be stars. Line profiles and short-term variability DOI: 10.1051/aas:1996117

Astronomy and Astrophysics Supplement Series, Vol. 116, April II 1996, 309-358

Atlas of high-resolution emission and shell lines in Be stars. Line profiles and short-term variability gif

R.W. Hanuschik , W. Hummel , E. Sutorius , O. Dietle and G. Thimm

Send offprint requests to: R.W. Hanuschik, Bochum address

Astronomisches Institut, Ruhr-Universität Bochum, D-44780 Bochum, Germany
Astronomisches Institut, Universität Tübingen, Waldhäuser Str. 64, D-72076 Tübingen, Germany
Astrofysisch Instituut, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium
European Southern Observatory, Karl-Schwarzschild-Straße 2, D-85748 Garching, Germany

Received August 7; accepted September 25, 1995

Abstract:

We present an atlas of high-, high-resolution ( km ) data of Be star emission and shell profiles. We have collected profiles of H and of Fe II , mostly of the 5317 transition. These lines have been selected to provide measures for the overall emission strength and for the velocity field in these disks. We have collected data for 77 southern and equatorial programme stars, covering the period 1982-1993. This is the most comprehensive overview of profile shapes in Be disks. We propose a three-dimensional scheme in which most observed profiles can be classified. The parameters are i) inclination, ii) optical depth, and iii) the pattern of the velocity field. A search for short-term variability (timescales between five days and a few minutes) in six stars ended with negative result. Shortest observed timescale for variability is a few days for well-developed disks in binary systems (HR 1910, HR 2142).

Key words: atlas --- stars: Be --- lines: profiles


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