TY  - GEN
N2  - The interplay between luminous and dark matter is essential to the formation of galaxies. It is thought to take place in a multistage process, starting with the gravitational collapse of dark matter, followed by baryonic gas falling into the potential wells. As baryons cool down, they form stars, resulting in the first galaxies. The formation process is still poorly understood, but observations provide empirical relations between galaxy characteristics, such as the "fundamental plane" of elliptical galaxies, which correlates brightness, size and velocity dispersion. This work explores aspects of galaxy formation through two techniques. Non-parametric modeling of gravitational lenses constrains their total mass content. Stellar mass can be estimated via population synthesis. Both techniques are applied to a sample of 21 lenses, using archival HST data. In a first step the fundamental plane is recovered. The lensing galaxies are shown to be close to virial equilibrium. We extract radial mass profiles (spatially resolved  1 kpc) and find a common radial range, where the transition from baryonic to dark matter dominated regions occurs. For different radii R, we study the enclosed stellar (Ms(< R)) to total mass (ML(< R)) plane, which can be viewed as a projection of the fundamental plane. Extrapolating dark matter profiles, we find an extension of the concentration to virial mass relation to unprecedented low masses. Finally we examine possible diagnostics of the baryonic cooling process and test common prescriptions used in simulations.
A1  - Leier, Dominik
KW  - Stellare PopulationssyntheseGravitational Lensing 
KW  -  Dark Matter 
KW  -  Elliptical Galaxies 
KW  -  Stellar Population Synthesis
AV  - public
TI  - On the Distribution of Luminous and Dark Matter in Strong Lensing Galaxies
Y1  - 2011///
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/12791/
ID  - heidok12791
ER  -