Galaxy triplets are interesting laboratories where we can study the formation and the evolution of small and large systems of galaxies. This study aims to investigate signs of interaction between the members of nine isolated galaxy triplet systems (27 galaxies) selected from the “SDSS-based catalogue of Isolated Triplets” (SIT) with members brighter than 17.0 ($m_r\le$ 17.0) in the $r-$band, and mean projected separation between the members of $r_p\le$ 0.1 Mpc. In this work, we performed a one-dimensional (1D) fitting of the surface brightness profiles and a two-dimensional (2D) modeling of the sample galaxies. In the 1D fitting, we examined the far outer part of the light profiles of disk galaxies (22 galaxies) and categorized them into type I (simple exponential), type II (down-bending), and type III (up-bending). This fitting results showed that 55$\%$ of disk galaxies in our sample represent type III i.e are in state of interaction. In the 2D modeling, we fit smooth axisymmetric profiles to the 27 galaxies and found that 70$\%$ exhibit asymmetric features and signs of interactions in their residual images. Thus, we conclude that galaxy triplets, with projected separations ($r_p\le$ 0.1 Mpc) between their members, are physically bounded systems that show pronounced signs of interactions.

银河三胞胎是有趣的实验室，在这里我们可以研究大小星系的形成和演化。这项研究旨在调查9个孤立星系三重态系统（27个星系）的成员之间相互作用的迹象，这些系统选自“基于SDSS的孤立三重态目录”（SIT），其成员的亮度高于17.0（${米}_{\mathrm{[R}}\le$ 17.0）中 $\mathrm{[R}-$频段，以及各成员之间的平均预计间隔 ${\mathrm{[R}}_p\le$0.1 Mpc。在这项工作中，我们对表面亮度分布进行了一维（1D）拟合，并对样本星系进行了二维（2D）建模。在一维拟合中，我们检查了盘状星系（22个星系）的较远轮廓，并将其分为I型（简单指数），II型（向下弯曲）和III型（向上弯曲）。拟合结果显示55$％$在我们的样本中，盘状星系的一部分代表III型，即处于相互作用状态。在2D建模中，我们将光滑的轴对称轮廓拟合到27个星系中，发现有70个$％$在残像中表现出不对称的特征和相互作用的迹象。因此，我们得出结论，银河三胞胎具有预计的间隔（${\mathrm{[R}}_p\le$ 成员之间的距离是0.1 Mpc），是有界的系统，显示出明显的相互作用迹象。