Seminars and Colloquia at ESO/Santiago

For ESO and ESO-related Conferences and Workshops in Europe and Chile please check the main Conferences and Workshops page.


Broadcast of the ESO talks is available upon request.  If anyone is interested, kindly contact us via email
at least 60 min prior  to the beginning of the talk.


November 2014

19.11.14 (Wednesday) Joint ESO-ALMA Colloquium
12:00
"White Dwarf magnetic fields -- Historical review and new results"
Gennady VALYAVIN (Special Astrophysical Observatory of the Russian Academy of Sciences)
Abstract
Close
"White Dwarf magnetic fields -- Historical review and new results"

Gennady VALYAVIN (Special Astrophysical Observatory of the Russian Academy of Sciences)

Abstract

Studies of white dwarf (WD) stars is of fundamental importance for the understanding of stellar and galactic evolution, as WDs represent the final evolutionary stage of more than 90\% of all stars. Nowadays, we believe that the general properties and evolution of WDs are fairly well understood. However, there are several important problems that still need to be properly addressed; especially those connected with the group of about 800 isolated magnetic white dwarfs (MWDs). The most important problems are associated to problems of origin and evolution of this group of stars. This review will present the history of MWDs, newest results, what is known and still unknown about them.

20.11.14 (Thursday)
15:30
"Kinematic and metallicity evolution of field and cluster spiral galaxies"
Bodo ZIEGLER (U Wien)
Abstract
Close
"Kinematic and metallicity evolution of field and cluster spiral galaxies"

Bodo ZIEGLER (U Wien)

Abstract

In the first part of the talk, I'll present some studies on the evolution of star forming disk galaxies out to redshift 1 with an emphasis on their velocity fields and rotation curves. In particular, I'll present observations of the Tully-Fisher relation at different epochs and show how these can constrain the hierarchical growth and chemical enrichment of disk galaxies in combination with theoretical models and simulations. In addition, I'll explore the interaction history in different environments and what processes drive the quenching of star formation and transformation of galaxy types.
In the second part, I'll concentrate on the evolution of gas metallicities based on measurements of five strong emission lines that render accurate oxygen abundances and star formation rates. Extending spectroscopic observations to the NIR, we can explore the Fundamental Metallicity Relation out to redshifts around 2 where the cosmic star formation history peaks. The impact of cluster environments on the FMR is studied with CLASH clusters at z~0.5.


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