Infrared colors and the diffuse interstellar bands

Details Infrared colors and the diffuse interstellar bands Infrared colors and the diffuse interstellar bands

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223..168s&link_type=abstract

Astrophysical Journal, Part 1, vol. 223, July 1, 1978, p. 168-179. NSF-supported research;

Astronomy and Astrophysics

Astronomy

114

Infrared Astronomy, Interstellar Matter, Spectral Bands, Stellar Spectrophotometry, Astronomical Catalogs, Correlation Coefficients, Diffuse Radiation, Interstellar Extinction

Scientific paper

Broad-band infrared photometric measurements have been gathered for 105 stars which exhibit diffuse interstellar bands in their spectra. All normal stars obey a single reddening law, and a value of R equal to 3.08 + or - 0.15 is derived. This value is consistent with other recent determinations of R. The diffuse band indicators, the central depth of the 4430-A feature and the equivalent widths of the 5780-A and 6284-A features, show as large a scatter with the infrared color excesses as they do with E(B - V). No single-valued relation between the color excesses and the diffuse band strengths appears to exist. This casts doubt on whether dust grains which produce the visual and infrared extinctions are the carriers for the diffuse interstellar features.

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