Signatures of extended discs and outflows in the circumgalactic medium using the Q0107 quasar triplet

ABSTRACT We use H i absorption along the lines-of-sight to Q0107 quasar triplet in order model potential disc and outflow structures circumgalactic medium of intervening galaxies at z ? 1, as well intergalactic on scales up a few virial radii. consider sample twelve isolated field with position angles inclinations measured from HST imaging redshifts our spectroscopic surveys, alongside 27 detected Ly ? absorbers within 500 km s?1 these galaxies. Building previous work showing increased incidence close projected major minor axes, we rotating discs bi-conical outflows attempting reproduce observed absorption. Requiring models match multiple provides additional constraints over single-sightline observations. identify four possible velocities ?100 s?1, two which extend or beyond radius, variety opening angles. Two have nearby co-rotating rotation vvir, that may probe disc-like structures, can rule out disc/outflow origin for further ten absorbers. These indicate outflowing large but are either not ubiquitous, do always produce detectable ?. In some cases, successful even axis galaxy, exhibit wide results imply purely geometrical cuts sufficient distinguish between single line-of-sight studies.