We explore the fundamental relations governing the radial and vertical velocity dispersions of stars in the Milky Way. We determine stellar age estimates from combined studies of complementary surveys including GALAH, LAMOST, APOGEE, and the NASA Kepler and K2 missions, and obtain parallax and proper motion from {\it Gaia} DR2. We find that stellar samples from these surveys, even though they target different tracer populations and employ a variety of age estimation techniques, follow the same set of fundamental relations.

Paper PDF: 

veldisp_mw.pdf

Around one percent of evolved stars are surprisingly rich in lithium, and the fraction rises with rising metallicity. Lithium is destroyed by proton capture at relatively low temperature, and in standard stellar evolution models it is depleted significantly in post-main-sequence evolution. A number of mechanisms have been proposed as the source of lithium in giant stars, based on their rareness and their tendency to be found near the red clump and the "bump" in the red giant branch luminosity function.

Paper PDF: 

Lithium_team_200428.pdf

This review discusses the structure and evolution of the Milky Way, in the context of opportunities provided by asteroseismology of red giants. The review is structured according to the main Galactic components: the thin disk, thick disk, stellar halo, and the Galactic bar/bulge. The review concludes with an overview of Galactic archaeology and chemical tagging, and a brief account of the upcoming HERMES survey with the AAT.