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

M. Kazmierczak; P. Gnacinski; M. R. Schmidt; G. Galazutdinov; A. Bondar; J. Krelowski

doi:10.1051/0004-6361/200811558

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arXiv · 1009.5192

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

M. Kazmierczak·P. Gnacinski·M. R. Schmidt·G. Galazutdinov·A. Bondar·J. Krelowski

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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.

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M. Kazmierczak, P. Gnacinski, M. R. Schmidt, G. Galazutdinov, A. Bondar, J. Krelowski. 2010-09-27. Excitation temperature of C2 and broadening of the 6196A diffuse interstellar band. https://doi.org/10.1051/0004-6361%2F200811558

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