Emission-line Outflows from the Circumnuclear to Circumgalactic Scales in a Partially Obscured Quasar

Abstract We present a detailed analysis of the rest-frame UV and optical emission-line spectrum partially obscured quasar J121704.70+023417.1 (hereafter J1217+0234). Here obscuring material, very likely dusty torus invoked by AGN unification models, acts as natural coronagraph, which greatly suppresses both continuum broad-line emission in enables clear detection three components at beyond scale: (1) The component, with blueshift v ≈ 1200 km s −1 line width FWHM 2600 , shows exceptionally large intensity ratios, such N /Ly α 2.3 O vi 1.4, indicating that emitting gas is highly ionized has high density up to n H ∼ 10 13 cm −3 possibly associated torus. (2) largely unshifted narrow-line 510 completely absent all lines but Ly significantly detected forbidden [O iii ], ii [Ne ] optical, implying massive low-density ( 2 ) ∼40 kpc from galactic center. (3) intermediate component only between (2), might bridge gases circumnuclear circumgalactic scales. Follow-up observations spatial resolution sensitivity are needed confirm speculation helpful reveal outflows multiscales J1217+0234.