Projekt C

Unresolved stellar populations with MUSE

Prof. Dr. Martin M. Roth (AIP, advisor) and Prof. Dr. Wolf-Rainer Hamann (UP, co-advisor)


Background: While galaxies in the Local Group can be routinely resolved into individual stars, at least above a certain luminosity threshold, the light from more distant systems carries inevitably the collective signal of many stars. During the last decade the integral field spectroscopy enormously improved our understanding of nearby galaxies. The success of integral field spectroscopy is based on the fact that spectra can be resolved in the spatial dimension.

Aims: The new integral field spectrograph MUSE, successfully commissioned at the ESO Very Large Telescope in Chile, is the first panoramic integral field spectrograph with good spectral and spatial resolution. MUSE data of nearby Galaxies are used to study the stellar population kinematics and composition.

Methods: The stellar population is investigated using in house state of the art population synthesis codes. We will in detail study the spatial distribution of stellar parameters (e.g. metallicity gradients) to reveal the assembly history of the galaxy. These data enable us to discriminate between different galaxy evolution models and merging scenarios.