Excitation temperature of C2 and broadening of the 6196A diffuse interstellar band

Abstract

This paper presents a finding of the correlation between the width of a strong diffuse interstellar band at 6196A and the excitation temperature of C2 based on high resolution and high signal-to-noise ratio spectra. The excitation temperature was determined from absorption lines of the Phillips A-X and Mulliken D-X systems. The width and shape of the narrow 6196A DIB profile apparently depend on the C2 temperature, being broader for higher values.

7 pages, 8 figures, A&A 2009

References in corpus (1)

• Abundances and Behavior of 12CO, 13CO, and C2 in Translucent Sight Lines

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• On a common carrier hypothesis for the 6613.6 and 6196.0 Å diffuse interstellar bands