Welcome to my Home page 
I am a permanent staff of the Institute of Astronomy and Astrophysics at the Université Libre de Bruxelles as a FNRS research director.
My research focuses on the topics of stellar evolution and nucleosynthesis and includes: pre-main sequence stars, AGB stars, stellar rotation, primordial stars,  binary evolution and nucleosynthesis. I am also interested in stellar hydrodynamics and involved in the development of the SPH code PHANTOM.
 
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| Institut d'Astronomie et d'Astrophysique | Phone | +32 (0)2 650 5516 | |
| Université Libre de Bruxelles | |||
| Campus de la plaine | Fax | +32 (0)2 650 4226 | |
| CP 226 - Boulevard du triomphe | Office | Bat NO - 4th floor - 2. N.4. 208 | |
| B-1050 Bruxelles - BELGIUM | Lionel.Siess @ ulb.be | 
 New yields from AGB stars experiencing Proton Ingestion Events 
