4 May 2012 - 6:32pm — Janine Pforr
In the last two decades astronomers carried out a large number of galaxy surveys tuned towards the study of galaxy formation and evolution. With the ever improving technology, increasing telescope sizes of ground-based telescopes and the development of space-based telescopes it has become possible to detect galaxies at a time when the Uni- verse was only a few hundred million years old. However, for the majority of galaxies a detailed spectroscopic analysis is not possible due to their distance and limited telescope time.
6 June 2012 - 12:05pm — Jonas Johansson
Stars light up galaxies that are the major building blocks of the Universe. Throughout this thesis we cover the analysis of stars and stellar populations to gain knowledge on the formation of galaxies and the evolution of the Universe. Understanding massive early-type galaxies is key to understand mass assembly and the evolution of galaxies.
The spectra of stellar populations carry a wealth of information regarding galaxy formation and evolution. Absorption lines are particularly useful as they are tracers of galaxy formation epoch and time-scale.
23 February 2012 - 8:00am — Will Percival
Cosmology aims to study the origin, composition and evolution of the entire Universe. The standard model for cosmology, called ΛCDM , represents a good fit to most of the observations we have, but it is a phenomenological model with no strong theoretical foundation, so one of the biggest challenges in cosmology (but important for the entire physics) will be to understand if this is the correct model (and so try to find a theoretical framework for it) or if a model with some sort of “new” physics will take place as the standard one.
22 February 2012 - 8:50am — Will Percival
The use of Baryon Acoustic Oscillations (BAO) as a standard ruler in the 2-point galaxy clustering signal has proven to be an excellent probe of the cosmological expansion. With the abundance of good quality galaxy data predicted for future large sky surveys, the potential to conduct precision cosmology using clustering analyses is immense.
20 February 2012 - 11:53am — Anonymous