Effects of Differential Rotation on the CO Line Profiles

Details Effects of Differential Rotation on the CO Line Profiles Effects of Differential Rotation on the CO Line Profiles

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jkas...25...65p&link_type=abstract

Journal of the Korean Astronomical Society, vol. 25, no. 2, p. 65-78

Astronomy and Astrophysics

Astronomy

Scientific paper

Effects of cloud rotation on the profiles of CO J = 1-0 lines are investigated by theoretically generating line profiles under physical conditions similar to the ones in large globlues. The synthesized profiles are presented and their characteristics are discussed. It is found that when the Doppler shift of the observed CO lines is interpreted as the rotation velocity, the optically thin 13CO lines underestimate the rotation velocity by up to 10 percents, while the self-reversed optically thick 12CO lines overestimate the velocity up to 20 percents. The optically thin line is shown to be of use in probing the distribution of rotation velocity in dark globules.

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