Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975rspta.279..323d&link_type=abstract
(Royal Society, Discussion on Astronomy in the Ultraviolet, London, England, Apr. 9, 10, 1974.) Royal Society (London), Philosop
Astronomy and Astrophysics
Astronomy
1
Interstellar Extinction, Line Spectra, Molecular Absorption, Stellar Radiation, Ultraviolet Absorption, Absorption Spectra, Early Stars, Molecular Spectra, Nebulae, Radiative Lifetime
Scientific paper
The ultraviolet absorption lines produced in interstellar clouds through the absorption of radiation from early-type stars by molecular hydrogen may be analyzed to yield the particle densities and ultraviolet fluxes in the absorbing regions. The absorption by HD may be analyzed to determine the proton densities and the ionizing fluxes. The interpretation carries implications concerning the formation of other interstellar molecules, which may be the source of additional absorption lines.
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