Submillimeter/millimeter observations of the high-mass star forming region IRAS 22506+5944     

Jin-Long Xu  Jun-Jie Wang National Astronomical Observatories  Chinese Academy of Sciences  Beijing  China  NAOC-TU Joint Center for Astrophysics  Lhasa 《中国天文和天体物理学报》2010,10(2)

The mapping observations of CO J = 2-1, CO J = 3-2, 13 CO J = 2-1 and 13 CO J = 3-2 lines in the direction of IRAS 22506+5944 have been made. The results show that the cores in the J = 2-1 transition lines have a similar morphology to those in the J = 3-2 transition lines. Bipolar molecular outflows are verified. The prior IRAS 22506+5944 observations indicated that two IRAS sources and three H 2 O masers were located close to the peak position of the core. One of the IRAS sources may be the driving source ...  相似文献   

C_2H, HC_3N and HNC observations in OMC-2/3     

Qiang Liu    Ji Yang  Yan Sun  Ye Xu Purple Mountain Observatory  Chinese Academy of Science  Nanjing  China Graduate University of Chinese Academy of Sciences  Beijing  China 《中国天文和天体物理学报》2011,(6)

For the first time, the OMC-2/3 region was mapped in C2H (1-0), HC3N (10-9) and HNC (1-0) lines. In general, the emissions from all the three molecular species reveal an extended filamentary structure. The distribution of C2H cores almost follows that of the 1300μm condensations, which might suggest that C2H is a good tracer to study the core structure of molecular clouds. The core masses traced by HNC are rather ?at, ranging from 18.8 to 49.5 M , while also presenting a large span for those from C2H, rangi...  相似文献