Astron. Astrophys. Suppl. Ser.
Volume 117, Number 3, June II 1996
|Page(s)||557 - 559|
|Published online||15 June 1996|
Einstein A-coefficients for vib-rotational transitions in CO
Department of Physics, University of Gorakhpur, Gorakhpur 273 009, India
2 Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007, India
Send offprint request to: S. Chandra, School of Sciences, Indira Gandhi National Open University, New Delhi 110 068, India
Accepted: 1 December 1995
Einstein A-coefficients for vib-rotational transitions in CO isotopomers, for vibrational quantum number v up to 20, rotational quantum number J up to 140, and up to 4, are calculated. The change in J is governed by the selection rules . These coefficients play an important role in astronomy, as CO is the most abundant molecule after , and has been observed in almost all the astronomical objects.
Key words: ISM: molecules / molecular data
© European Southern Observatory (ESO), 1996