摘要
Mapping observations were made towards IRAS 201109-3321 using the Nobeyama 45 m and the Delingha 13.7m radio telescopes. The high angular resolution （- 21″） image with the 45m telescope shows that there is a highvelocity bipolar molecular outflow in this region, which is in the NW-SE direction with a collimation factor of 2.2. The outflow has significantly higher mass loss rate and mechanical luminosity than those from low mass YSOs, indicating that the outflow is driven by the IRAS source. A dense massive core was detected by mapping C180 （J = 1 - 0） line in the area with the 13.7m telescope. The IRAS source lies within the core but slightly offsets from its emission peak.
Mapping observations were made towards IRAS 201109-3321 using the Nobeyama 45 m and the Delingha 13.7m radio telescopes. The high angular resolution （- 21″） image with the 45m telescope shows that there is a highvelocity bipolar molecular outflow in this region, which is in the NW-SE direction with a collimation factor of 2.2. The outflow has significantly higher mass loss rate and mechanical luminosity than those from low mass YSOs, indicating that the outflow is driven by the IRAS source. A dense massive core was detected by mapping C180 （J = 1 - 0） line in the area with the 13.7m telescope. The IRAS source lies within the core but slightly offsets from its emission peak.
基金
Supported in part by the National Natural Science Foundation of China under Grant No 10573029, and the 0ne Hundred Talents Programme of Chinese Academy of Sciences.
