A Very High Resolution Survey of Interstellar CH and CH +

Details A Very High Resolution Survey of Interstellar CH and CH + A Very High Resolution Survey of Interstellar CH and CH +

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apjs...99..107c&link_type=abstract

Astrophysical Journal Supplement v.99, p.107

Astronomy and Astrophysics

Astronomy

73

Ism: Clouds, Ism: Kinematics And Dynamics, Ism: Molecules

Scientific paper

We report the results of a survey at very high spectral resolution of interstellar CH and CH+ in diffuse clouds toward 20 bright stars, and medium-resolution observations to determine radial velocities. The high-resolution observations [(λ/δλ) ˜ 500,000] resolve all the CH+ and all the CH lines. Most of the CH lines show multiple overlapping components at this resolution. It is often possible to associate a weak broad CH component with a CH+ component of similar radial velocity and width. The implications of these results for CH and CH+ formation scenarios are discussed.

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