The results of a photometric analysis of edge-on spiral galaxies in three blue fields of the Hubble Space Telescope (HDF-N, FDF-S, HUDF) are discussed. It is shown that galaxies at z ≈ 0.5 have lower values of the radial exponential scales h_r of the stellar disks compared to nearby galaxies. The observed variation in the scales of the disks is consistent with a n h_r ∝ (1 + z)^–n law, where n ≈ 1. Indications are found of a significant reduction in the fraction of galaxies with B/PS bulges from z=0 to z=1.

中文翻译：

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边缘螺旋星系结构的演变

讨论了哈勃太空望远镜（HDF-N，FDF-S，HUDF）的三个蓝场中边缘螺旋星系的光度分析结果。结果表明，与附近的星系相比，z≈0.5的星系的恒星盘的径向指数尺度h _r的值更低。所观测到的圆盘尺度变化与anh _r ∝（1 + z）^–n定律一致，其中n≈1。发现迹象表明B / PS凸出的星系比例从z = 0显着减少到z = 1。