On the radial profile of gas-phase Fe/α ratio around distant galaxies

This paper presents a study of the chemical compositions in cool gas around a sample of 27 intermediate-redshift galaxies. The sample comprises 13 massive quiescent galaxies at z = 0.40–0.73 probed by QSO sightlines at projected distances d = 3–400 kpc, and 14 star-forming galaxies at z = 0.10–1.24 probed by QSO sightlines at d = 8–163 kpc. The main goal of this study is to examine the radial prof...