University of Heidelberg

Hot star group at the Landessternwarte

The hot star group at the LSW mainly studies the mass-loss and variability of hot, massive stars, in the last years mainly with the fiber-linked echelle spectrographs Heros and Feros at ESO, La Silla.

In a collaboration with Th. Rivinius, D. Baade and S. Stefl from ESO we investigate the spectroscopic variability of Be stars and the formation of their disks.

In addition, chemical abundances of B stars are studied with LTE and NLTE model-atmosphere analyses. For more details see the synthetic spectra of B main-sequence B stars. The full data can be downloaded from here.

Please see the Hot Star Newsletter for current work on hot stars.


The following lists theses works from 1998 until now. The files are all in PDF format. These files can be viewed e.g. with Adobe Acrobat Reader, xpdf, or ghostscript, which are available for many platforms. The size of the files is given in parentheses.

PhD theses

  • Monika Maintz: Be binary stars with hot, compact companions (9.4 MB)
  • Sascha Tubbesing: Der bedeckungsveränderliche P Cygni-Stern R81 (B2.5Ia-O) in der Großen Magellanschen Wolke (6.9 MB)
  • Thomas Gäng: Dynamic and static conditions in the atmospheres of Luminous Blue Variables (15 MB)
  • Dominik Schäfer: Windvariablität von B Überriesen (7.4 MB)
  • Jörg Schweickhardt: Analyse hochaufgelöster Zeitserien der Wolf-Rayet-Doppelsterne gamma^2 Velorum, WR 22 und HD 5980 (3.7 MB)

Master theses

  • Wolfgang Zaech: Stellare und zirkumstellare Aktivität des Be-Sterns eta Centauri (4.6 MB)
  • Ansgar Reiners: Magnetfelder heißer Sterne an den Beispielen sigma Ori E und theta^1 Ori C (7.8 MB)
  • Olivier Schnurr: Spektroskopie des Wolf-Rayet Doppelsterns theta Muscae (4.4 MB)
  • Monika Maintz: Modellierung nicht-radialer Pulsation von Be-Sternen am Beispiel omega (28) CMa (6.3 MB)
  • Stefan Noll: Spektroskopie des Herbig Ae/Be Sterns HD 163296 (7.1 MB)
  • Sascha Tubbesing: Spektroskopische Variationen des Be-Sterns 28 Cygni (5.3 MB)
  • Ralf Haffa: Spektroskopie des Doppelsterns alpha Virginis (3.7 MB)
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