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Astronomy Colloquium (2017 Fall Semester)

* Date
Oct 17
* Speaker
Tali Palma (UAB Santiago, Chile)
* Title
VVV Survey and Milky Way Globular Clusters
* Abstract
 

The “VISTA variables in the Vía Láctea” (VVV) Survey is an ESO Public NIR time-domain survey of the inner Milky Way, which mapped the Galactic bulge and an adjacent section of its mid-plane. It had performed time-domain observations in the Ks-band for 6 years and providing an atlas of 562 sq. deg. of the sky in 5 wavebands (ZYJHKs). The VVV data products offer a unique dataset to map the stellar populations deeply embedded on highly obscured regions. Among the new discoveries, almost 30 globular clusters distributed in different regions of our Galaxy were recently detected and characterized. Because of the relatively small amount of known Galactic globular clusters, each new discovery is importrant and impact statistically on the global known propreties of these objects.

In this talk I’ll describe the main scientific goals of the VVV Survey and some of its interesting discoveries. Particulary, I’ll discuss the different methods used to discover globular clusters in the most obscured regions of our Galaxy.
 
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