Remarks on a vibronic origin for the diffuse band spectrum

Details Remarks on a vibronic origin for the diffuse band spectrum Remarks on a vibronic origin for the diffuse band spectrum

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.103..353n&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 103, no. 2, Aug. 1984, p. 353-356.

Astronomy and Astrophysics

Astrophysics

1

Astronomical Spectroscopy, Diffuse Radiation, Interstellar Radiation, Magnesium Oxides, Vibrational Spectra, Chromium, Interstellar Extinction

Scientific paper

The authors have demonstrated that the diffuse band spectrum could not originate as a series of vibronic transitions from atomic impurities in interstellar MgO grains as has recently been proposed since laboratory spectra of such materials show no evidence for such complex structure. Furthermore, recent observational evidence indicates that the extinction feature at 160 nm in the standard interstellar extinction curve upon which the identification of interstellar MgO was founded is actually the result of a calibration error in the original observational data.

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