Evan Nuñez (Caltech)

Connecting galaxy properties (e.g., ionized interstellar medium or ISM, stellar mass) with the physical conditions of the inner circumgalactic medium (CGM) is necessary to understand the evolution of baryons in the galaxy. This is because z~2-3 star-forming galaxies ubiquitously show evidence of strong galactic outflows and some inflowing/recycled gas at this epoch (i.e., galaxy scale baryon cycle). To accomplish
his, we spearhead a new survey that builds upon the Keck Baryonic Structure Survey (KBSS) QSO fields, which will characterize the Inner CGM of QSO Line Of Sight Emitting (InCLOSE) Galaxies at z~2-3. I will showcase the first results from the survey which involve two galaxies that are associated with high NHI gas. Among other things, we find that these galaxies' CGM contains a significant amount of mass, their CGM metallicity and dust extinction is <10%
that of the ISM, and some of the highest metallicity gas in their CGM will escape their gravitational potential possibly enriching the IGM or other galaxies. The entire KBSS-InCLOSE sample, which currently has more than 70 galaxies spanning untouched impact parameters (11-100kpc), will expand our understanding on the rarity of these findings and the z~2-3 galactic baryon cycle.