The Calar Alto Legacy Integral Field Area Survey > (CALIFA) - science results so far

When Apr 19, 2013 from 10:30 AM to 12:30 PM
What
  • Colloquium
Where SH, Lecture hall
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11:00  Rosa Gonzalez-Delgado (IAA Granada):

We apply the fossil record method based on spectral synthesis techniques to recover the SFH resolved in space and time for more than 100 galaxies from the CALIFA survey, which is gathering Integral Field Spectroscopy over the optical range and up to radial distances of 3 half light radii(HLR) of local (z = 0.005--0.03) galaxies. We investigate the SFH of galaxies and their trends of the radial structure as a function of the galaxy stellar mass and morphology. We show how the different galactic spatial sub-components ("bulge" and "disk") grow their stellar mass over time. We find that star formation history of bulges is more fundamentally related to the stellar galaxy mass, and in contrast disks is related with the local stellar mass surface density. We also obtain the spatially averaged and integrated galaxy properties, and how they are related with the properties at 1HLR.

11:30  Vivienne Wild (Uni St Andrews):

This part of the talk will use the Mice as a case study to introduce for the 3 different aspects of CALIFA data: line emission, stellar continuum and kinematics. The Mice are a major merger between two massive gas-rich spirals, observed between first passage and final coalescence. By combining with multiwavelength observations and comparison to hydrodynamic simulations, the impact of first passage on the progenitor galaxies is revealed. Finally, I will briefly summarise some of the emission line based results from CALIFA so far.

12:00  Mariya Lyubenova (MPIA Heidelberg):

This part of the talk will review our ongoing efforts to understand galaxy kinematics and dynamics along the Hubble sequence. CALIFA, due to it's supreme coverage in wavelength, spatial extent and morphological type of galaxies provides us with a unique setup to study simultaneously gas and stellar kinematics and the distribution of luminous and dark matter.