Dorado is a nearby (17.69 Mpc) strongly evolving galaxy group in the Southern Hemisphere. We are investigating the star formation in this group. This paper provides a FUV imaging of NGC 1533, IC 2038 and IC 2039, which form a substructure, south west of the Dorado group barycentre. FUV CaF2-1 UVIT-Astrosat images enrich our knowledge of the system provided by GALEX. In conjunction with deep optical wide-field, narrow-band H\(\alpha \) and 21-cm radio images we search for signatures of the interaction mechanisms looking in the FUV morphologies and derive the star formation rate. The shape of the FUV luminosity profile suggests the presence of a disk in all three galaxies. FUV emission is detected out to the optical size for IC 2038, and in compact structures corresponding to H\(\alpha \) and H ii bright features in NGC 1533. A faint FUV emission, without an optical counterpart, reminiscent of the H i structure that surrounds the outskirts of NGC 1533 and extends up to IC 2038/2039, is revealed above the local background noise.

多拉多是南半球附近一个（17.69 Mpc）强烈演化的星系群。我们正在调查这个群体中的恒星形成。本文提供了 NGC 1533、IC 2038 和 IC 2039 的 FUV 成像，它们在 Dorado 群重心西南部形成了一个子结构。FUV CaF2-1 UVIT - Astrosat图像丰富了我们对GALEX提供的系统的了解。结合深光宽场、窄带H \(\alpha\)和 21 厘米的无线电图像，我们搜索 FUV 形态中相互作用机制的特征，并推导出恒星形成率。FUV 光度剖面的形状表明在所有三个星系中都存在一个圆盘。FUV 发射被检测到 IC 2038 的光学尺寸，并在对应于 NGC 1533 中H \(\alpha \)和 H  ii明亮特征的紧凑结构中。微弱的 FUV 发射，没有光学对应物，让人想起 H  i围绕 NGC 1533 外围并延伸至 IC 2038/2039 的结构在局部背景噪声上方显露出来。