Title :
Peculiarities of CO molecule radiation at mm wavelengths in interstellar molecular clouds
Author :
Shulga, V.M. ; Antuyfeyev, A.V. ; Lavrik, I.V.
Author_Institution :
Inst. of Radio Astron., Acad. of Sci., Kharkov, Ukraine
Abstract :
The processes of active star formation in interstellar molecular clouds lead molecules to a nonequilibrium distribution throughout the available energy levels. This is the reason why molecular clouds are sources of fairly intense radiation, with the frequency spectrum determined by vibratory-rotational levels of the energy structure of the molecules. It is known that in star formation regions molecules such as H2O, OH, SiO and some others may be in an inversion state. Calculations have shown that under certain conditions in molecular clouds, the CO molecule inversion may also exist in the J=1-0 transition
Keywords :
astronomical spectra; carbon compounds; interstellar molecular clouds; interstellar molecules; millimetre wave spectra; CO; CO molecular radiation; H2O; OH; SiO; active star formation; energy levels; energy structure; frequency spectrum; interstellar molecular clouds; mm wavelengths; molecular inversion state; molecular nonequilibrium distribution; radiation sources; star formation regions; vibratory-rotational levels; Clouds; Energy states; Hydrogen; Integral equations; Kinetic theory; Land surface temperature; Masers; Radio astronomy;
Conference_Titel :
Physics and Engineering of Millimeter and Sub-Millimeter Waves, 2001. The Fourth International Kharkov Symposium on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-6473-2
DOI :
10.1109/MSMW.2001.947312