Origin of the diffuse interstellar absorption bands. III - Zero phonon lines in MgO and CaO

Details Origin of the diffuse interstellar absorption bands. III - Zero phonon lines in MgO and CaO Origin of the diffuse interstellar absorption bands. III - Zero phonon lines in MgO and CaO

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..47..185d&link_type=abstract

Astrophysics and Space Science, vol. 47, Mar. 1977, p. 185-193. Research supported by the National Research Council of Canada.

Astronomy and Astrophysics

Astrophysics

5

Absorption Spectra, Calcium Oxides, Diffuse Radiation, Interstellar Radiation, Magnesium Oxides, Phonons, Alkaline Earth Oxides, Interstellar Matter, Radiation Damage

Scientific paper

Evidence is presented that zero phonon lines of defect centres in MgO and CaO are respon- sible for the diffuse interstellar bands at 5362, 5705, 6425.7, and 6699.4 A. Phonon sidebands of these lines are identified with the diffuse bands at 5535, 6177, 6196, 6284, and 6314 A. These features arise in interstellar MgO and CaO particles with sizes ~ 50 A. Infrared spectral features due to interstellar MgO and CaO are discussed

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