Carbon depletion and the lambda 2175 feature

Details Carbon depletion and the lambda 2175 feature Carbon depletion and the lambda 2175 feature

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..507m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Nov. 1979, p. 507-510.

Astronomy and Astrophysics

Astronomy

15

Abundance, Graphite, Interstellar Extinction, Interstellar Matter, Ultraviolet Absorption, Ultraviolet Astronomy, Carbon, Depletion, Interstellar Gas

Scientific paper

This paper examines consequences of the assumptions that carbon is depleted from the interstellar gas in the form of small graphite grains and that such grains are responsible for the UV extinction feature at 2175 A. A theoretical relationship between carbon depletion and the strength of the feature is derived. Comparison of the theoretical results with observational data on 10 stars whose spectra exhibit the 2175-A UV extinction bump indicates that graphite grains may not be responsible for that feature.

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