论文标题
ZBLAC- Bl lacertae对象的光谱数据库
ZBLLAC -- A spectroscopic database of BL Lacertae objects
论文作者
论文摘要
本文介绍了url https://web.oapd.inaf.it/zbllac/可在url https://web.oapd.it/zbllac/上提供的Bl lacertae（BLL）光谱的数据库。目前，它包含295 BLL的校准光谱。对于其中约35％，我们报告了一个牢固的红移Z量度，而对于35个来源，我们根据检测中间吸收系统（主要归因于MG II（2800 ANG））设定了Z下限。我们在此处报告数据库及其Web前端的体系结构，这些架构允许过滤，查询和交互式探索数据。我们通过给出红移的分布并报告检测到的发射线，讨论当前数据集中对象的某些属性，事实证明，这些属性主要禁止并归因于[O II]（3737 ANG）和[O III]（5007 ANG）。最后，我们讨论了在35个BLL中检测到的干预吸收系统，这使我们能够将下限设置为距离。
This paper describes the database of optical spectra of BL Lacertae (BLL) objects ZBLLAC available at the URL https://web.oapd.inaf.it/zbllac/. At the present date, it contains calibrated spectra for 295 BLL. For about 35% of them, we report a firm measure of redshift z while for 35 sources we set a lower limit on z based on the detection of intervening absorption systems, mainly ascribed to Mg II (2800 Ang). We report here on the architecture of the database and on its web front-end that permits to filter, query and interactively explore the data. We discuss some properties of the objects in the present dataset by giving the distribution of the redshifts and reporting on the detected emission lines, which turn out to be mainly forbidden and ascribed to [O II] (3737 Ang) and [O III] (5007 Ang). Finally, we discuss on intervening absorption systems detected in 35 BLLs that allow us to set lower limits to their distance.
