Other
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234..506s&link_type=abstract
Astrophysical Journal, Part 1, vol. 234, Dec. 1, 1979, p. 506-512.
Other
27
Abundance, Interstellar Matter, Ultraviolet Spectra, Boron, Chromium, Cobalt, Depletion, Far Ultraviolet Radiation, Near Ultraviolet Radiation, Vanadium
Scientific paper
New observations of interstellar lines of boron, vanadium, chromium, and cobalt in the spectra of Zeta Oph and Xi Per have been obtained with the Copernicus satellite. Chromium has been detected for the first time toward a reddened star, and cobalt has been seen for the first time in any interstellar line of sight. New limits have been obtained for boron and vanadium. These new data, along with limits on scandium and other species from the literature, have been compared with models for the depletion process. No fully conclusive test of depletion models is yet possible, but the new data on boron appear to favor the hypothesis that the depletions are dominated by accretion of gas-phase particles onto grains, rather than being due to grain condensation under pressure equilibrium. The impact of these new data on the study of grain surface properties is described.
Oegerle William R.
Snow P. Jr. Th.
Weiler Edward J.
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