- (abs, pdf) Bonaca et al., Gaia reveals a metal-rich in-situ component of the local stellar halo
- (abs, pdf) Segers et al., Metals in the circumgalactic medium are out of ionization equilibrium due to fluctuating active galactic nuclei
- (abs, pdf) Yajima et al., Dusty Gas Accretion onto Massive Black Holes and Infrared Diagnosis of the Eddington Ratio