Nan Li; Wang Junjie
Source Publicationresearchinastronomyandastrophysics
AbstractBased on observations of 12CO (J=2-1), we select targets from archived Infrared Astronomical Satellite (IRAS) data of IRAS 02459+6029 and IRAS 22528+5936 as samples of cloud-cloud collision, according to the criteria given by Vallee. Then we use the Midcourse Space Experiment (MSX) A band (8.28 ~tm) im- ages and the NRAO VLA Sky Survey (NVSS) (1.4 GHz) continuum images to inves- tigate the association between molecular clouds traced by the CO contour maps. The distribution of dust and ionized hydrogen shows an obvious association with the CO contour maps toward IRAS 02459+6029. However, in the possible collision region of IRAS 22528+5936, NVSS continuum radiation is not detected and the MSX sources are merely associated with the central star. The velocity fields of the two regions in- dicate the direction of the pressure and interaction. In addition, we have identified candidates of young stellar objects (YSOs) by using data from the Two Micron All Sky Survey (2MASS) in JHK bands expressed in a color-color diagram. The distri- bution of YSOs shows that the possible collision region is denser than other regions. All the evidence suggests that IRAS 02459+6029 could be an example of cloud-cloud collision, and that IRAS 22528+5936 could be two separate non-colliding clouds.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Nan Li,Wang Junjie. multiwavelengthstudyoftwopossiblecloudcloudcollisionregionsiras024596029andiras225285936[J]. researchinastronomyandastrophysics,2012,012(009):1269.
APA Nan Li,&Wang Junjie.(2012).multiwavelengthstudyoftwopossiblecloudcloudcollisionregionsiras024596029andiras225285936.researchinastronomyandastrophysics,012(009),1269.
MLA Nan Li,et al."multiwavelengthstudyoftwopossiblecloudcloudcollisionregionsiras024596029andiras225285936".researchinastronomyandastrophysics 012.009(2012):1269.
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