Chemical Composition of the Interstellar Gas: X-Ray Determinations

Details Chemical Composition of the Interstellar Gas: X-Ray Determinations Chemical Composition of the Interstellar Gas: X-Ray Determinations

Oct 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..18..329b&link_type=abstract

Astrophysics and Space Science, Volume 18, Issue 2, pp.329-333

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Noting that observations of X-ray attenuation at theK-shell ionization edge for many elements provide, prospectively, the least ambiguous means for establishing the chemical composition of the interstellar gas, we have evaluated the expected spectral discontinuities for all atoms from carbon to sodium and have tabulated the results. It is shown that with X-ray detectors of reasonable energy resolution and sensitivity theK-shell edges of C, N, O, Ne, Si, S, A and Mg are potentially observable if the ‘cosmic’ abundances are representative of the general interstellar environment.

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