Origin of the diffuse interstellar absorption bands. IV - Relation to interstellar depletion

Details Origin of the diffuse interstellar absorption bands. IV - Relation to interstellar depletion Origin of the diffuse interstellar absorption bands. IV - Relation to interstellar depletion

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.187..379m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 187, May 1979, p. 379-387. Research supported by the National Research

Astronomy and Astrophysics

Astronomy

13

Absorption Spectra, Interstellar Chemistry, Interstellar Radiation, Astronomical Models, Far Ultraviolet Radiation, Gas Density, Granular Materials, Interstellar Extinction, Interstellar Gas, Titanium

Scientific paper

The depletion of titanium is shown to be a strong function of the average gas density in the interstellar medium. It is shown that Ti depletes primarily by accretion onto small oxide grains and that these grains are responsible for the diffuse band at 4430 A, the extinction bump at 2175 A and extinction in the vacuum ultraviolet. Recent observational results are discussed and the predictions of the oxide grain model are examined in the light of these results.

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