对旋涡星系M33的HII区复合体IC133中H_2O脉泽VLBI斑点图的分析

An Analysis of the VLBI Relative Position Map of H 2O Masers in the HII Region Complex IC 133 of the Spiral Galaxy M33

用多重分离的旋转膨胀环模型，分析了旋涡星系Ｍ３３的ＨＩＩ区复合体ＩＣ１３３中的１４个脉泽源斑的ＶＬＢＩ相对位置图，发现这１４个Ｈ２Ｏ脉泽源斑在ＨＩ区复合体盘上成环状，分布在二个不同的旋转膨胀盘环上．同时，也得到这１４个Ｈ２Ｏ脉泽源斑的运动学特性．

Using the multi distinct rotating and expanding ring model the VLBI relative position map of the 14 H 2O maser spots in the HII region complex IC 133 of the spiral galaxy M33 is analysed. It is found that the 14 H 2O maser spots are distributed as disc rings in the HII region complex disc, and indeed in two different rotating and expanding disc rings. Meanwhile, their kinetic character is also derived.