SP-345 Evolution of the Solar System

 

FIGURE 20.6.2b. Frequency distribution of abundance ratios from fig. 20.6.2a.

 

FIGURE 20.6.2b. Frequency distribution of abundance ratios from fig. 20.6.2a. The diagram shows that on the average there is about 50 percent probability for solar photospheric observations to agree within a factor of five with their meteorite counterparts, and a 90 percent probability for agreement within a factor of 60. Ratios for elements with atomic number smaller or equal to10 are not included in this diagram since they are affected by preferential nuclear instabilities or are highly volatile. Neither are the noble gases included because their abundances in solids are strongly permuted due to volatility and other factors; furthermore their photospheric abundances are not known. Two abundance ratios exceed 128 and are not shown in the graph. Data compiled by L. Shaw.
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