Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248..563t&link_type=abstract
Astrophysical Journal, Part 1, vol. 248, Sept. 1, 1981, p. 563-568.
Astronomy and Astrophysics
Astrophysics
7
Astronomical Models, Heavy Elements, Interstellar Gas, Nuclear Binding Energy, Grains, Interstellar Matter, Mineralogy, Semiempirical Equations, Ultraviolet Absorption
Scientific paper
An empirical relationship is derived which reproduces the observed depletion factors in interstellar gas by relating them to some preshock distribution factor and the binding energy of the elements in appropriate compounds. By fitting this equation to the data, estimates are obtained for both the distribution factor and the critical binding energy, which is related to the shock strength at which grains are completely destroyed. The critical binding energy value therefore provides an estimate of the energy involved in the most recent shock event, while the preshock distribution factor is related to the preshock elemental distribution between gas and dust. It is noted that the minerals most likely to survive are the refractory ones with the largest binding energies.
Larimer John W.
Trivedi M. P. B.
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