SEDIGISM
The Structure, Excitation and Dynamics of the Inner Galactic Interstellar Medium (SEDIGISM) survey is a large-scale (84 square deg) survey that observed the inner Galactic disc in 13CO(2-1) and C18O(2-1) lines with the APEX telescope at 28" resolution. SEDIGISM aims to study the properties and distribution of molecular clouds in the Milky Way IV quadrant; the Galaxy large-scale structure; excitation and optical depth of the dense gas content, high-mass star formation etc.
Publications: ADS link
Press release: MPIfR link, Astrobites link
Presentation video: Youtube link