| The reservoir of baryons and metals surrounding galaxies is known as the circumgalactic medium (CGM). The CGM plays a crucial role in the growth of galaxies; galaxies require a continuous gas supply to sustain star formation, and this gas accretion process is regulated by feedback from newly formed stars. However, observational analysis of the CGM is challenging. Not only because the low gas density makes the CGM difficult to image directly, but the CGM also consists of gas structures of different temperatures and densities. We will present our work on studying the kinematics of the cool (~10^4 K) and warm-hot (~10^5.5 K) CGM of low-redshift, star-forming galaxies. In particular, we will focus on the kinematics of the warm-hot gas traced by the highly ionized O VI absorption detected in sightlines of background quasars. We will compare our results with analyses from cosmological simulations and discuss the observational bias that potentially affects the interpretation of observational data. |
