摘要
通过对 Ｗ３（ＯＨ）区域 ２２ ＧＨz Ｈ_(２)Ｏ脉泽源的短时间跟踪观测，探测到速度为-５２．８ ｋｍ／ｓ子谱的流量密度呈线性下降趋势，变化时标约为 １９天．同时也观测到了整个脉 泽源的谱线宽度与该子谱的强度之间的相关变化．这些现象可能是由脉泽云之间的相 互碰撞导致脉泽抽运率的变化所引起的。
We report the observed results of a short timescale monitoring of the 22 GHz water maser emission in W3(OH). A timescale of 19 d has been detected, and the variations are accompanied by some changes in the linewidth. The time variation is probably caused by a collisional pump which led to changes in the pump input.
基金
国家自然科学基金
中国科学院上海天文台青年实验室资助
