Evidence for a link between the more prominent optical emission bands in the Red Rectangle and some of the diffuse instellar absorption

Details Evidence for a link between the more prominent optical emission bands in the Red Rectangle and some of the diffuse instellar absorption Evidence for a link between the more prominent optical emission bands in the Red Rectangle and some of the diffuse instellar absorption

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.255p..11s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 255, March 1, 1992, p. 11P-16P. Research supported by S

Astronomy and Astrophysics

Astronomy

74

Absorption Spectra, Emission Spectra, Interstellar Gas, Nebulae, Visible Spectrum, Diffuse Radiation, Electron Transitions, Stellar Spectra, Interstellar Medium: Individual Objects: Red Rectangle, Interstellar Medium: Jets And Outflows, Interstellar Medium: Molecules.

Scientific paper

A re-examination of the spectra of the nebulosity in the Red Rectangle (RR) shows that the wavelengths of the four most prominent emission bands correspond closely with one of the proposed families of diffuse interstellar absorption bands (DIBs). At large offset distances (cooler conditions) from the A0-B8 central star (HD 44179), the emission bands become quite narrow and both the peak wavelengths and widths extrapolate to the observed values for the corresponding DIBs; this suggests that each pair of the corresponding RR/DIB bands belongs to a common carrier. These emission and absorption features are discussed in terms of electronic transitions in gas-phase molecules.

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