Eric B. Burgh et al. 2000 ApJ 541 250 doi:10.1086/309432
Eric B. Burgh1, Stephan R. McCandliss1, B-G Andersson1 and Paul D. Feldman1
Show affiliationsA sample of 59 sight lines to reddened Galactic OB stars was examined for correlations of the strength of the CO Fourth Positive (A1Π-X1Σ+) absorption band system with the ultraviolet interstellar extinction curve parameters. We used archival high-dispersion NEWSIPS IUE spectra to measure the CO absorption for comparison with parametric fits of the extinction curves from the literature. A strong correlation with the nonlinear far-UV curvature term was found with greater absorption, normalized to E(B-V), being associated with more curvature. A weaker trend with the linear extinction term was also found. Mechanisms for enhancing CO in dust environments exhibiting high nonlinear curvature are discussed.
dust, extinction; ISM: abundances; ISM: molecules; ultraviolet: ISM
Issue 1 (2000 September 20)
Received 1999 August 8, accepted for publication 2000 April 27
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M G Green 1978 Phys. Educ. 13 348
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