论文标题
基于中频段光度测量的类星体物理特性研究
Quasars physical properties study based on the medium-band photometric survey
论文作者
论文摘要
该研究是关于类星体宇宙学的进化。我们在Byurakan天体物理天文台的1-M Schmidt望远镜上使用了中型波段光度调查。已经选择了面积为2.38平方度的HS47-22场。我们已经使用宽带光度数据和贴花调查的形态分类，WISE调查的红外光度，SDSS调查的光谱，ROSAT X射线数据，第一个无线电数据和GAIA调查的Stellar Parallax数据进行了分类并组成了类星体样本。我们已经编制了682个类星体的样品，从中型波段光度数据确定了它们的光度红移，并计算了绝对恒星幅度。使用$λ$ -CDM型号$ω_m= 0.3 $和$ω__λ= 0.7 $，计算了不同红移的不同亮度范围的类星体的空间密度。在本文中，我们将结果与其他作品进行了比较。
The study is about the quasars cosmological evolution. We used the medium-band photometric survey at the 1-m Schmidt telescope of the Byurakan Astrophysical Observatory. The HS47-22 field with an area of 2.38 square degrees has been selected. We have classified objects and composed a sample of quasars using broadband photometric data and morphological classification from the DECaLS survey, infrared photometry from the WISE survey, spectroscopy from the SDSS survey, ROSAT X-ray data, FIRST radio data and stellar parallax data from the GAIA survey. We have compiled a sample of 682 quasars, determined their photometric redshifts from the medium-band photometric data, and calculated the absolute stellar magnitudes. The space density of quasars was calculated for different luminosity ranges at different redshifts using the $λ$-CDM model with $Ω_m = 0.3$ and $Ω_λ= 0.7$. In this paper, we present the comparison of our results with other works.
