Current Main Research Interests
Young stellar objects
Very distant (young) galaxies
Active galaxies and QSOs
Massive luminous stars
Cosmic X-ray sources
Some personal information can be found in a brief
English CV . If you prefer a German CV please click
Lebenslauf . A more detailed account of my scientific career (in German) can be found in this
The following links provide access to lists of my scientific papers.
Depending on what you are interested in, please click either
on papers in refereed scientific journals
or on invited reviews and lectures .
An (incomplete) list of other publications can be found under "other papers" .
For a list of books, which I wrote, edited, or co-edited, click on books .
Many of the more recent publications in refereed journals can be accessed via ADS . Papers that are still in press are available on the astro-ph preprint server .