The Southern Stellar Stream Spectroscopic Survey: Overview and Latest Science Results

Dr. Ting Li (Carnegie)
Tuesday, June 8, 2021 - 11:00am

The Southern Stellar Stream Spectroscopic Survey (S5) is an ongoing spectroscopic program that maps the newly discovered stellar streams with the fiber-fed AAOmega spectrograph on the Anglo-Australian Telescope (AAT) to acquire the line-of-sight velocities and metallicities of the stream member stars. Meanwhile, the brightest stream members are also followed up with Magellan/MIKE for detailed chemical abundance study. S5 is the first systematic program pursuing a complete census of known streams in the Southern Hemisphere, providing a uniquely powerful sample for understanding the building blocks of the Milky Way's stellar halo, the progenitors and formation of stellar streams, the mass and shape of the Milky Way's halo, and ultimately the nature of dark matter. In this talk, I will give a brief overview of the current status of the program, highlighting the latest science results from the survey and the first public data release of S5.

Talk Type: