|Lehre / Teaching||List of publications||Conference:|
|Selected presentations||"Planet Formation and Evolution 2012"|
I am a Professor for Astronomy at the Observatory of the Ludwig-Maximilians-Universität Munich, where I lead the Young Stars & Star Formation Group since October 2008.
From the year 2010 until 2014 I served as the German Representative in the ESO Users Committee.
|HAWK-I near-infrared image of the Carina Nebula||Carina Nebula: Herschel far-infrared||LABOCA sub-mm image of the Carina Nebula|
Chandra Carina Complex Project
High resolution infrared images of Young Stellar Objects
COUP X-ray image of the Orion Nebula Cluster
My field of research is star formation. I observe Young Stellar Objects (YSOs) with infrared and X-ray observations, and investigate the stellar populations and star formation histories of OB associations. I have been principal investigator of numerous projects using the X-ray satellites ROSAT, Chandra, and XMM, the far-infrared satellite Herschel, a visiting astronomer at the Calar Alto Observatory and the Anglo-Australian Observatory, and am principal investigator of numerous observing projects using the ESO Very Large Telescope (VLT), the ESO VLTI, and the APEX sub-mm telescope.
From 2007 to 2010 I served as one of the Work Package Managers for the topic "The birth and influence of massive stars" in the EU FP6 Marie Curie Research Training Network "CONSTELLATION: The origin of the IMF".
My current main research interests are as follows:
Stellar populations, massive star feedback, and triggered star formation in OB associations
The largest current project in this context is my multi-wavelength investigation of the Carina Nebula. The April 2013 issue of the Star Formation Newsletter contains an article in which I described the background of this project. Further information can be found at my Carina project page.
I also lead a long-term project to explore the full stellar population of the Upper Scorpius OB Association, the most nearby region of recent massive star formation. Following large multi-object spectroscopic surveys to identify a representative sample of low-mass members, our studies of the mass function and the age distribution of the members allowed a rather detailed reconstruction of the star formation process of this association. The results suggest that the star formation process in Upper Sco was triggered, most likely by the shock-wave of an expanding supernova- and wind-driven superbubble from the nearby Upper Centaurus Lupus association. In a new project (funded in the context of the DFG Priority Program 1573: Physics of the Interstellar Medium) we study the interaction of the winds and ionizing radiation of the massive stars with the surrounding interstellar medium in detail.Relevant publications: A5, A2, A1, B93, B92, B90, B88, B87, B86, B85, B84, B78, B77, B75, B74, B71, B70, B69, B29, B22, B16, B12, C29; several presentations are also available
X-ray studies of Young Stellar Objects
Young stars generally show very strong X-ray emission. A good knowledge of the X-ray properties of YSOs is of paramount importance not only for the understanding of the physical mechanisms that lead to the X-ray emission and their relation to the magnetic activity; the X-ray irradiation of protoplanetary disks has also far-reaching implications for the formation of planetary systems, and the evolution of protoplanetary atmospheres. Furthermore, since X-ray radiation is much less affected by extinction than optical light, X-ray observations can penetrate though extinctions of up to AV ~ 500 mag into dark clouds and allow a deep look at embedded YSOs. Since X-ray activity is particularly effective in discriminating YSOs from unrelated fore- and background field stars, X-ray studies are also a very important tool for the investigation of the stellar populations of star-forming regions.
I have performed numerous X-ray observations of young stellar clusters (in particular IC 348, NGC 1333, and the Serpens dark cloud) and investigated the flares and X-ray spectra of YSOs. I have been deeply involved in the Chandra Orion Ultradeep Project (COUP), a unique 10-day long observation of the Orion Nebula Cluster, that provided the most comprehensive dataset ever acquired on the X-ray emission of young stars. A recent large X-ray project where I am deeply involved is the Chandra Carina Complex Project.Together with Maria Massi I organized the conference "Coronae of Stars and Accretion Disks" that was held at the Bonn in December 2006.
Relevant publications: A3, B83, B82, B80, B77, B76, B75, B74, B73, B72, B69, B63, B60, B59, B53, B51, B50, B49, B48, B47, B46, B42, B40, B36, B33, B32, B27, B24, B17, B15, B14, B13, B11, B10, B8, B7, B6, B3, B2; several presentations are also available.
The following links lead to a (recently updated) collection of some of my X-ray images and infrared images of star forming regions.
A growing number of new X-ray, infrared, and sub-mm images of the Carina Nebula Complex is available since March 2011 on the webpage describing our Carina Multiwavelength Project.
Prof. Dr. Thomas Preibisch Universitäts-Sternwarte München Ludwig-Maximilians-Universität Scheinerstr. 1 81679 München Germany preibisch at usm.uni-muenchen.de TEL: +49 (0)89-2180-6016 Last update: 04 January 2017