2019
Milky Way Discussion Group
2:00–3:00 pm ERC 419
Chalk Talk: Arieh Konigl (UChicago) & Victor Buza (UChicago)
12:00–1:00 pm ERC 501
Arieh Konigl (UChicago): “Crystals from the Sky”
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Victor Buza (UChicago): “Listening to the Big Bang with CMB Polarization”
A&A Cookies, Coffee and Conversation
2:30–3:30 pm Hubble Lounge (ERC 501)
KICP seminar - Emmanuel Schaan, Lawrence Berkeley National Laboratory
12:00–1:00 pm ERC 401
Emmanuel Schaan, Lawrence Berkeley National Laboratory, “Lensing of the CMB and intensity maps: analogy with galaxy lensing and application to foreground cleaning”
A&A Colloquium: Evan Kirby (Caltech): “Galactic Archaeology: Galaxy Formation and Nucleosynthesis”
3:30–4:30 pm ERC 161
Galactic archaeology is the use of the velocities and abundances of stars to learn about the history of galaxy formation and nucleosynthesis. I will tell three stories of galactic archaeology with three different groups of elements: alpha elements, the iron peak, and the r-process
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First, I will present detailed abundances of individual stars in the dwarf satellites, stellar streams, and smooth halo of M31. The evolution of [alpha/Fe] in these stars supports the hierarchical assembly paradigm of galaxy formation.
Second, I will present abundances of manganese and nickel in dwarf satellite galaxies of the Milky Way. These abundances are best explained by a strong contribution of sub-Chandrasekhar-mass Type Ia supernovae.
Third, I will present measurements of barium abundances in the globular cluster M15. The constancy of barium from the main sequence to the red giant branch indicates that the stars in M15 were born with their unusually large dispersion of r-process elements rather than acquiring it from an external source.
A&A Cookies, Coffee and Conversation
2:30–3:30 pm Hubble Lounge (ERC 501)
KICP seminar - Haibo Yu, University of California, Riverside
12:00–1:00 pm ERC 576
Haibo Yu, University of California, Riverside, “Self-Interacting Dark Matter”
KICP colloquium - Yonatan Kahn, University of Illinois at Urbana-Champaign
3:30–4:30 pm ERC 161
Yonatan Kahn, University of Illinois at Urbana-Champaign, “Axions from the Lab to the Cosmos”
Milky Way Discussion Group
2:00–3:00 pm ERC 419
Chalk Talk: Irina Zhuravleva (UChicago) & Greg Gilbert (UChicago)
12:00–1:00 pm ERC 501
Irina Zhuravleva (UChicago), “Viscosity in the bulk intergalactic plasma: does the gas in galaxy clusters flow like honey?“
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Greg Gilbert (UChicago), “The architectures of Kepler’s multiplanet systems”