Tuorla seminars in spring 2017
Seminars will be streamed online unless otherwise informed. No registration required and the weblink is given later in the announcement of the seminar. The connection starts sligthly before the seminar.
After the seminar you can ask questions by using the chat window in the ADOBE CONNECT interface. We hope to recieve a lot of questions!
The seminars are held on Thursdays at 14.30 unless otherwise noticed. The title of the talk will be added as the seminar approaches.
27.4 Claudia Maraston (ICG, Portsmouth):
"Stellar population models: from galaxy formation to cosmology"
Back in the 70’s Beatrice Tinsley and Alan Sandage recognized that stellar
evolution and cosmology are intimately connected, with stars providing the
only cosmic clock, which is independent of the cosmological model and of the
still unknown Dark Sector. Galaxies are composed of billions of stars with
different mass and chemical composition, which will never be resolved except
for a few cases in the Local Group. The theoretical tool for describing the
global spectral energy distribution and mass properties of the stellar content
of a galaxy is called stellar population model. These models rely on stellar
evolution and radiative transfer and model atmosphere theories, and are
defined by parameters related to star formation and galaxy evolution.
Their use in astrophysics and cosmology is widespread in both the
interpretation of observational data as well as the prediction of simulated
Universes. I shall review the state of art in the modeling and discuss key
implications for our understanding of how galaxies form and evolve in a
04.05 Elizabeth Stanway (Warwick)
11.05 Olivier Ilbert (Marseille)
18.05 Till Sawala (Helsinki)
25.05 no talk (Ascension Day)
01.06 Jochen Heidt (Heidelberg)
08.06 Lauri Pesonen (Helsinki) - The Great Impact Hunt in Fennoscandia - new results, remaining questions