Davor Krajnovic (AIP)

ATLAS3D Project: what shapes early-type galaxies?
Wann Am 15.11.2013 von 10:30 bis 12:00
  • Kolloquium
Wo SH, Hörsaal
Termin übernehmen vCal / iCal

ATLAS3D project is a multi-wavelength survey of a complete and volume limited sample of morphologically selected early-type galaxies. 260 galaxies not exhibiting spiral arms or extended dust lanes were extracted from a complete parent sample of 871 galaxies brighter than -21.5 mag (K-band) and observed from La Palma with the SAURON integral-field spectrograph mounted on the 4.2 William Herschel Telescope. Additionally, the majority of sample galaxies were observed also with the IRAM 30m telescope, CARMA and Westerbork interferometeric arrays, as well as the MegCam at the Canada-France-Hawaii-Telescope.

In this talk I will briefly describe the survey and discuss the clues for formation and evolution of early-type galaxies based on structure, kinematics and dynamics of observed galaxies, as well as their stellar populations and properties of gas in the cold, warm and hot phases. The main conclusions are that nearby early-type galaxies carry imprints of various types of formations processes (dissipative, non-dissipative, in-situ, ex-situ, environmental effects), most evident at non edge-on views of the fundamental (mass) plane, that velocity dispersion is the best predictor of galaxy properties and that spirals and early-type galaxies should be considered together, as they form a parallel and a continuous sequence in their properties.