论文标题
QSO（HULQ）II通过镜头探测的高$ z $宇宙。 QSO镜头候选者的深度GMOS光谱
High-$z$ Universe probed via Lensing by QSOs (HULQ) II. Deep GMOS spectroscopy of a QSO lens candidate
论文作者
论文摘要
已知星系及其中央超级黑洞可以共同发展，但迄今为止的物理背景尚不清楚。 QSO（HULQ）项目通过镜头探测的高$ z $宇宙旨在通过使用准恒星对象（QSO）宿主星系来调查这种协同进化，以重力透镜（QSO镜头）。我们介绍了HULQ项目HULQ J0002+0239的第一个QSO镜头候选者的光谱观察结果，该结果由$ z {\ rm d} = 1.455 $的QSO宿主星系组成，四个看似透镜的对象中的跨类似构型。在Gemini North望远镜上使用Gemini多对象光谱仪，获得了两个可能具有$ Z \ SIM 24.5 $ mag的可能镜头对象的深层光谱。他们的光谱表明，这些物体是新发现的星系$ z = 0.29 $，$ z = 1.11 $，我们得出结论，HULQ J0002+0239不是QSO镜头。我们的QSO镜头搜索结果与预测的QSO镜头数量一致，我们讨论了对其他QSO镜头候选者的未来研究如何告诉我们更多有关黑洞质量和宿主星系缩放关系的演变。
Galaxies and their central supermassive black holes are known to coevolve, but the physical background for this is unknown as of yet. The High-$z$ Universe probed via Lensing by QSOs (HULQ) project aims to investigate this coevolution by using quasi-stellar object (QSO) host galaxies acting as gravitational lenses (QSO lenses). We present the results of the spectroscopic observation of the first QSO lens candidate from the HULQ project, HULQ J0002+0239, which consists of a QSO host galaxy at $z_{\rm d} = 1.455$ and four seemingly lensed objects in a cross-like configuration. Deep optical spectra of two of the possibly lensed objects with $z \sim 24.5$ mag were obtained with the Gemini Multi-Object Spectrograph on the Gemini North Telescope. Their spectra reveal that the objects are newly discovered galaxies at $z=0.29$ and $z=1.11$, and we conclude that HULQ J0002+0239 is not a QSO lens. Our QSO lens search results are so far in agreement with the predicted number of QSO lenses, and we discuss how the future investigation of additional QSO lens candidates could tell us more about the evolution of the black hole mass and host galaxy scaling relations.
