I am a research professor in
the Dept. of Physics & Astronomy
Ghent University
Krijgslaan 281, S9
B-9000 Gent
Belgium
Tel.: ++ 32 9 264 47 91
Fax: ++ 32 9 264 49 89
Email: sven.derijcke@UGent.be



Welcome to the homepage of Sven De Rijcke







Thesisonderwerpen binnen de onderzoeksgroep dwerggalaxieën vind je hier.



Disc galaxies
Cooling/heating curves
Ionization & specific energy


Visit us at the YouTube channel of the Ghent dwarf galaxy group: http://www.youtube.com/user/AstroUGent .




FS75 (bottom) and FS76 (top), two dEs in the NGC5044 group. Note the cluster of galaxies in the background.
VRI color composite, VLT+FORS2.

Our main research interests are the origin and evolution of dwarf galaxies and the stability of disc galaxies. Quiescent dwarf elliptical galaxies are the most abundant galaxies in the universe, found in large numbers in clusters and groups of galaxies. Star-forming dwarf irregular galaxies, on the contrary, reside in lower-density environments. The two round galaxies in the colour image below are two dEs (FS75 at the bottom and FS76 at the top) in the NGC5044 Group. This image was obtained by us with VLT/FORS2 in the course of an ESO Large Program on the internal dynamics of dwarf ellipticals.
We have been involved in observational projects on dwarf galaxies for over a decade. Our initial interests were mainly the stellar kinematics and internal dynamics of dwarf ellipticals. With the work of Mina Koleva, who is a postdoc here in Ghent, our focus has now shifted more towards the stellar populations and star-formation histories of dwarfs.

My work on disc galaxies is done in collaboration with Victor Debattista of the University of Central Lancashire (UK). I have developed a Python code, called pyStab, with which the stability properties of any given disc galaxy model can be investigated. Put simply: it calculates the spectrum of eigenmodes of a stellar disc using linear perturbation theory.

Most PhD students in our group are performing N-body/SPH simulations of the formation and evolution of dwarfs using a modified GADGET-2 code. The code contains prescriptions for star formation, chemical and energy feedback, radiative cooling between 10K and 109K, and heating by the cosmic UVB. The thermodynamic properties of the gas (ionization equilibrium, mean particle mass, ...) are calculated from its temperature, density, and composition using pre-compiled tables, providing us with a realistic treatment of the dynamics of the multi-phase interstellar medium.

This is a link to our publications in refereed journals.

This is a link to our conference proceedings.


How to reach us:


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