Abstract

The morphology and kinematics of the matter in the vicinity of young stars ZZ Tau and ZZ Tau IRS are studied. It has been found that the emission nebula (the H\(\alpha\) filament) located southwest of these stars, as well as the Herbig–Haro object HH 393 projected onto it are moving away from ZZ Tau and ZZ Tau IRS with a radial velocity of about 50 km s\({}^{-1}\). On the inner edge of the western part of the H\(\alpha\) filament, there is a cooler filament emiting in the molecular hydrogen line (\(\lambda=2.12\) \(\mu\)m) and in the dust continuum. In the northeastern part of the studied region, a new Herbig–Haro object is discovered and assigned the number HH 1232. The presence of several more new emission nebulae is suspected. The electron density in the studied regions of the H\(\alpha\) filament, as well as HH 393 and HH 1232 \(N_{e}\lesssim 100\) cm\({}^{-3}\). Arguments are presented in favor of the fact that the dusty disk wind has created a gas-and-dust nebula around ZZ Tau IRS, along the symmetry axis of which there is a jet moving in the direction of HH 393.

中文翻译：

---

年轻恒星 ZZ Tau 和 ZZ Tau IRS 附近星际物质的形态和运动学

摘要

研究了年轻恒星 ZZ Tau 和 ZZ Tau IRS 附近物质的形态和运动学。人们发现，位于这些恒星西南方向的发射星云（H \(\alpha\)灯丝）以及投射到其上的赫比格-哈罗天体 HH 393 正在远离 ZZ Tau 和 ZZ Tau IRS，其移动速度为径向速度约为 50 km s \({}^{-1}\)。在 H \(\alpha\)灯丝西边的内缘，有一根较冷的灯丝在氢分子谱线 ( \(\lambda=2.12\)  \(\mu\) m 中发射，在灰尘连续体。在研究区域的东北部，发现了一个新的赫比格-哈罗天体，编号为 HH 1232。怀疑还存在几个新的发射星云。H \(\alpha\)灯丝以及 HH 393 和 HH 1232 \(N_{e}\lesssim 100\)  cm \({}^{-3}\)的研究区域中的电子密度。有人提出了支持这一事实的论据，即尘埃盘风在 ZZ Tau IRS 周围形成了气体和尘埃星云，沿着该星云的对称轴，有一股射流朝 HH 393 的方向移动。