The Channel Maps and the Position-Velocity Diagrams of Multi-core Structure of Cepheus C

The first important problem in the star forming process is the formation of proto-star core in star forming regions of molecular cloud.The multi-core structure in star forming regions is related to the forming of proto-star core.The molecular radiation of C¹⁸O(J = 1-0)in Cepheus C has been observed.The C¹⁸O(J = 1-0)observations form the basis for an interesting study on the cloud cores and star formation activity in the cores of the Cepheus C.In order to study the multicore structure of C¹⁸O(J = 1-0)in the Cepheus C the channel maps and the position-velocity diagrams of C¹⁸O(J = 1-0)will be shown.From the maps it is found that the contour level and distribution size of the three cores in Cepheus Care related to the channel velocity very much. The channel velocity of C¹⁸O(J = 1-0)molecules in coreb, which dist ributed in all the channels velocity, is different with one in core a and core c very much.The C¹⁸O(J = 1-0) molecules in core a and core c of the Cepheus C mostly distributed in the blue-shif ted channel velocity relating to peak velocity, and only in -10.0～-9.5 km/s, which is the red-shif ted channel velocity relating to peak velocity.And the contour level of C¹⁸O(J = 1-0)in -10.0～-9.5 km/s is small and the dist rbution size in the channel map is small.According to the position-velocity diag rams the asymmetry of the distribution both blue-shifted and red-shif ted components should reflect the asymmetry of the profile.From the diagrams it also is found that the contour level and the dist ribution size of the three cores are different from each other.Both results from the maps and diagrams are coincident with each other.