We have produced a sample of 58 edge-on spiral galaxies at redshifts z ~ 1 selected in the Hubble Ultra Deep Field. For all galaxies we have analyzed the 2D brightness distributions in the V₆₀₆ and i₇₇₅ filters and measured the radial (h_r) and vertical (h_z) exponential scale lengths of the brightness distribution. We have obtained evidence that the relative thickness of the disks of distant galaxies, i.e., the ratio of the vertical and radial scale lengths, on average, exceeds the relative thickness of the disks of nearby spiral galaxies. The vertical scale length h_z of the stellar disks of galaxies shows no big changes at z = 1. The possibility of the evolution of the radial scale length h_z for the brightness distribution with redshift is discussed.

中文翻译：

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哈勃超深场中的边缘星系

我们已经在红移产生58边缘上的螺旋星系的样品Ž在哈伯深领域选定〜1。对于所有的星系我们在分析了2D亮度分布V ₆₀₆和我_775层的过滤器和测量的径向（ħ _{- [R} ）和垂直（ħ _Ž）的亮度分布的指数标度长度。我们已经获得证据表明，遥远星系的圆盘的相对厚度，即垂直和径向刻度长度的比率，平均而言，超过了附近旋涡星系的圆盘的相对厚度。垂直刻度长度h _z在z = 1时，星系的恒星盘的变化没有太大变化。讨论了径向尺度长度h _z随红移而变化的亮度分布的可能性。