论文标题
恒星区域中的水层的适当运动IRAS IRAS 23139+5939
Proper Motions of Water Masers in the Star-forming Region IRAS 23139+5939
论文作者
论文摘要
我们观察到h $ _2 $ o（6 $ _ {16} $ $ \ rightarrow $ 5 $ _ {23} $）maser发射与高质量星形地区IRAS IRAS 23139+5959使用Kava使用Kava a在KVN（Korea（Korea）和Vera（日本）之间的VLBI阵列组合。通过多上述卡瓦观测，我们检测到了三组Maser特征，其中两个与Karl G. Jansky先前检测到的非常大的阵列（VLA）相吻合。通过确定MASER适当的运动，我们发现Maser组中的第一个运动表现出不断扩展的运动，几乎沿着视线范围内的广角流出，而第二个则似乎与\ hii区域的信封有关。我们讨论了IRAS 23139+5939中的星形形成活动，这可能反映在与从正面看到的流出相关的H $ _2 $ o masers的高变异性。
We observed H$_2$O (6$_{16}$ $\rightarrow$ 5$_{23}$) maser emission associated with the high-mass star-forming region IRAS 23139+5959 using the KaVA a combination of VLBI arrays between the KVN (Korea) and VERA (Japan). Through multi-epoch KaVA observations, we detected three groups of maser features, two of which coincide with those previously detected by the Karl G. Jansky Very Large Array (VLA). By determining the maser proper motions, we found that the first of maser groups exhibit an expanding motion that traces a wide-angle outflow almost along the line of sight, while the second one seems to be associated with the envelope of an \hii region. We discuss the star formation activity in IRAS 23139+5939, which may be reflected in the high variability of H$_2$O masers associated with an outflow seen from the front.
