Observations of diffuse interstellar lines toward stars with low column densities of H2

Details Observations of diffuse interstellar lines toward stars with low column densities of H2 Observations of diffuse interstellar lines toward stars with low column densities of H2

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...266l..51m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 266, Mar. 1, 1983, p. L51-L54.

Astronomy and Astrophysics

Astrophysics

15

Early Stars, Interstellar Matter, Interstellar Radiation, Spectral Line Width, Diffuse Radiation, Hydrogen, Spectral Bands, Visible Spectrum

Scientific paper

The diffuse interstellar band at 5780 Å has been observed in lines of sight where the column density of H2 is less than 1016 cm-2. The strength of λ5780 toward γ Cas, κ Ori, and ρ Leo argues strongly against a molecular carrier of the 5780 Å feature. The interstellar band at 5797 Å also appears to be present in κ Ori and ρ Leo. The author concludes that the diffuse features at 5780 Å and 5797 Å are carried by dust grains.

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