Determine whether inner-CGM properties are common among low-mass star-forming galaxies

Determine whether the ionization, kinematic, and thermal properties observed in the inner circumgalactic medium of massive z≈2 star-forming galaxies are also common among low-mass star-forming galaxies at z≈2.3.

Background

The paper emphasizes that detailed inner-CGM studies at z≈2 have primarily examined massive star-forming galaxies, for which complex kinematics, frequent intermediate- and high-ion detections, and substantial warm gas have been reported. The authors present two low-mass galaxies as an initial test of whether these properties extend to lower stellar masses, but the very small sample does not resolve the broader mass dependence. This question motivates the expansion of the KBSS-InCLOSE survey to a larger sample of low-mass galaxy–QSO pairs.