Hydrogen Atoms in Interstellar Grains

Details Hydrogen Atoms in Interstellar Grains Hydrogen Atoms in Interstellar Grains

Apr 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969natur.222..361d&link_type=abstract

Nature, Volume 222, Issue 5191, pp. 361 (1969).

Physics

1

Scientific paper

PHOTOMETER measurements of stellar fluxes in the vacuum ultraviolet1-3 have shown that there exists a general flux deficiency below 1215 Å (Lyman-α). This observation is supported by the photographic spectra of Carruthers4, who suggests that this deficiency is not a result of line blanketing in the atmospheres of the stars studied, but is caused by absorption in some constituent of the interstellar medium. I examine here the possibility that the source of this absorption may be hydrogen atoms trapped at or near the surface of interstellar grains. The influence of a crystal environment on the Lyman-α transition of atomic hydrogen was investigated.

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