Colloquium on 28 August 2014
Galaxy Evolution and Cosmology Studies with SALT


Title: Galaxy Evolution and Cosmology Studies with SALT
Speaker: Catherine Cress
Date: Thursday, 28 August 2014
Time: 11:00 - 12:00
Venue: SAAO Auditorium


I’ll discuss three SALT projects dealing with galaxies and cosmology. The first involves spectroscopic follow-up of clusters of galaxies detected in CMB experiments, the aim being to measure masses of clusters so they can be used for cosmology. The second involves age-dating luminous red galaxies so they can be used to constrain time intervals associated with various redshift intervals. These measurements can then be used to infer the expansion rate of the universe directly at redshifts around z~0.5, providing new constraints on cosmological parameters. In the third project, we study the Tully-Fisher relation by measuring rotation curves for galaxies where Type Ia supernovae have been observed.

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