Event Title

Combined Spectroscopic-Photometric Follow-up Observations of DES Stellar Streams

Advisor(s)

Dr. Ting Li, Fermilab National Laboratories

Location

Room A113-2

Start Date

26-4-2019 11:05 AM

End Date

26-4-2019 11:20 AM

Abstract

A stellar stream is a group of stars that has been torn away from globular clusters and dwarf galaxies that have been stretched apart by gravitational tidal force. Previous observations have been made of stellar streams by the Dark Energy Survey. The objective of this research project is to confirm the findings discovered in the previous study and to further provide kinematic information about the streams. Stellar streams are sensitive to gravitational influences and we hope to use this data to help map the Milky Way’s Dark Energy Halo. Currently, we have taken new measurements of the stellar streams in the southern hemisphere and are working to ensure that the information has been properly observed. By the end of the research project, we hope to measure the 3D position, 3D velocity, and metallicity of all the stellar streams in the southern hemisphere. Furthermore, we hope to develop the instrumentation and techniques needed to carry out this type of research.

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Apr 26th, 11:05 AM Apr 26th, 11:20 AM

Combined Spectroscopic-Photometric Follow-up Observations of DES Stellar Streams

Room A113-2

A stellar stream is a group of stars that has been torn away from globular clusters and dwarf galaxies that have been stretched apart by gravitational tidal force. Previous observations have been made of stellar streams by the Dark Energy Survey. The objective of this research project is to confirm the findings discovered in the previous study and to further provide kinematic information about the streams. Stellar streams are sensitive to gravitational influences and we hope to use this data to help map the Milky Way’s Dark Energy Halo. Currently, we have taken new measurements of the stellar streams in the southern hemisphere and are working to ensure that the information has been properly observed. By the end of the research project, we hope to measure the 3D position, 3D velocity, and metallicity of all the stellar streams in the southern hemisphere. Furthermore, we hope to develop the instrumentation and techniques needed to carry out this type of research.