The detection of the λ 2175 Å feature , and further analysis of the BAL line profile structure in the gravitational lens candidate UM 425

We obtained MMT spectra of the gravitational lens candidate UM425 to compare the redshifts and line profile structures of lens components A and B, which are separated by ∼ 6. 5. The CIV λ 1550 Å emission in both A and B exhibits Broad Absorption Line (BAL) structure, consistent with the earlier detection of BAL structure in OVI λ 1033 Å and NV λ 1240 Å that… (More)