(CO)-C-13 mapping study for massive molecular cloud cores

Citation
Yf. Wu et al., (CO)-C-13 mapping study for massive molecular cloud cores, SCI CHINA A, 44(4), 2001, pp. 536-544
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY
ISSN journal
1001-6511 → ACNP
Volume
44
Issue
4
Year of publication
2001
Pages
536 - 544
Database
ISI
SICI code
1001-6511(200104)44:4<536:
Abstract
Using the newly installed SIS receiving system on the 13.7 m telescope at Q inghai Station of PMO, United Radio Astronomy of CAS, CO isotope (CO)-C-13 J = 1-0 and (CO)-O-18 J = 1-0 lines were observed for three sources S241, S 39 and ON3. Results show that the three sources have massive cores, of whic h the size is similar to 2-5 pc, masses are similar to 10(3)-10(4) M-circle dot. The widths of lines are also larger than those in low mass cores. And high velocity characteristics were observed for all the sources. The V-LSR distribution presents rotation of the core in ON3. And all the three cores contain deeply embedded forming massive stars. The young stellar objects i n S241 and ON3 seem to be moving away from their birth sites.