1982
DOI: 10.1016/0016-7037(82)90208-3
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Solar-system abundances of the elements

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Cited by 1,059 publications
(394 citation statements)
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References 124 publications
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“…C3A may be stable in a gas which is Al-poor, Ca-rich relative to a gas of solar composition but condensates from such a gas would have higher than solar CaO/AI203 ratios. Bulk compositions of type C inclusions have CaO/A1203 ratios (0.7 _ 0.2) consistent with that of a solar gas (0.77; [31]). …”
Section: Determination Of Original Condensate Mineralogymentioning
confidence: 54%
“…C3A may be stable in a gas which is Al-poor, Ca-rich relative to a gas of solar composition but condensates from such a gas would have higher than solar CaO/AI203 ratios. Bulk compositions of type C inclusions have CaO/A1203 ratios (0.7 _ 0.2) consistent with that of a solar gas (0.77; [31]). …”
Section: Determination Of Original Condensate Mineralogymentioning
confidence: 54%
“…The fluorescent yield of a species gives the probability that the excited ion will de-excite via fluorescence rather than autoionization. Figure 7 shows the results of a Monte-Carlo simulation modeling these processes when a power-law X-ray continuum with photon index Γ = 2 is incident on a gaseous slab [24,178], assuming the slab has cosmic abundances [179]. At soft X-ray energies, the albedo of the slab is very small due to the photoabsorption by the metals in the slab.…”
Section: Simple X-ray Reflection Modelsmentioning
confidence: 99%
“…Ainsi, la vie terrestre est essentiellement composée de carbone, d'hydrogène, d'oxygène et d'azote (avec une pincée de phosphore et de soufre) qui sont aussi quatre éléments chimiques très abondants dans l'univers [8]. Il est donc raisonnable de penser qu'une vie extraterrestre sera aussi basée sur ces éléments, même si une équipe américaine prétend avoir découvert une bactérie utilisant l'arsenic à la place du phosphore [9].…”
Section: Vies Terrestre Et Extraterrestre : Traits Communs Ou Diversiunclassified