Laboratory production of candidates for the diffuse interstellar bands

Details Laboratory production of candidates for the diffuse interstellar bands Laboratory production of candidates for the diffuse interstellar bands

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241l..55w&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 241, Oct. 1, 1980, p. L55-L58.

Astronomy and Astrophysics

Astrophysics

6

Interstellar Matter, Molecular Clouds, Molecular Diffusion, Molecular Spectra, Plasma Jets, Rare Gases, Absorption Spectra, Spectral Bands, Spectrum Analysis

Scientific paper

A method of synthesis via plasma discharge and rare gas cryogenic matrix isolation has produced large carbon-containing molecules from a 0.5% methane in argon mixture, giving rise to a reproducible pattern of features corresponding to diffuse interstellar bands (DIBs), including the strongest and widest 4430 (4428) A diffuse interstellar band, the second strongest and wide 6283 (6284) A DIB along with its narrower and shorter wavelength companion, the 6269 A DIB, and the 5778-5780 A DIBs. Because of matrix effects wavelengths are shifted slightly from their observed interstellar wavelengths. Importantly, the laboratory-produced spectral features are stable under irradiation of ultraviolet light produced by a mercury vapor lamp.

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