论文标题
HS47.5-22场的密度图
The density maps of the HS47.5-22 field
论文作者
论文摘要
我们使用来自1-M Schmidt telescope的BYURAKAN ASTROPHYSICAL PROPHOTHICALICALICATIC（Armenia）在16个中等乐队$ \ sim 250 $ a和四个宽带（u，g，g，g，g，g，r，r，r，r，r，r，r，r，r，i）的16个中等范围（亚美尼亚）的数据中，研究了星系过度密度图作为红移的函数$ 0 <\ \ mathrm z <0.8 $。这项工作中使用的数据均匀覆盖$ 2.39 $平方摄氏度，并具有准确的光度红移，降至$ \ Mathrm r <23 $ mag（ab）。我们重建了狭窄切片中HS 47.5-22 Rosat场的整个星系样品的密度对比度图，以进行全范围的红移。我们根据密度大于平均密度的两倍的密度峰选择具有自适应核的星系组和簇。星系的重建过度密度场由类似群集的结构组成，概述了全红移范围的类似空隙的区域$ 0 \ leq \ mathrm z \ leq 0.8 $。我们使用专门为该项目开发的软件检测到该领域的已知星系群。这使我们有可能研究恒星形成特性和星系形态如何取决于该领域的星系环境。
We study the reconstruction of overdensity maps of galaxies as function of redshift in the range $0 < \mathrm z < 0.8$ using data from 1-m Schmidt Telescope of Byurakan Astrophysical Observatory (Armenia) in 16 medium band $\sim 250$ A and four broad band (u,g,r,i) filters. The data used in this work homogeneously cover $2.39$ sq. deg with accurate photometric redshiftss, down to $\mathrm R < 23$ mag (AB). We reconstructed the density contrast maps for the whole galaxy sample of the HS 47.5-22 ROSAT field in narrow slices for full range of redshifts. We select groups and clusters of galaxies with adaptive kernel based on density peaks which are larger than two times the mean density. The reconstructed overdensity field of galaxies consists of cluster-like structures outlining void-like regions for full redshift range $0 \leq \mathrm z \leq 0.8$. We detect known galaxy clusters in this field with software specially developed for this project. This gives us a possibility to study how star formation properties and galaxy morphology depend on the environments of the galaxies in this field.
