GNIRS-DQS: SDSS 1.5<z<3.5 QSOs with NIR sp. obs.
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Quasars at z>~1 most often have redshifts measured from rest-frame ultraviolet emission lines. One of the most common such lines, CIV{lambda}1549, shows blueshifts up to...
红移z>~1的类星体，其红移多数通过静止系紫外发射谱线测得。此类发射谱线中最常见的之一为C IV λ1549，其蓝移幅度可达……
