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- W2892295841 abstract "The possibility that the chemical composition of the solar atmosphere has been affected by radiative dust cleansing of late and weak accretion flows by the proto-sun itself, is explored. Estimates, using semi-analytical methods and numerical simulations of the motion of dust grains in a collapsing non-magnetic and non-rotating gas sphere with a central light source are made, to model possible dust-cleansing effects. Our calculations indicate that the amounts of cleansed material may well be consistent with the abundance differences observed for the Sun when compared with solar-like stars and with the relations found between these differences and condensation temperature of the element. It seems quite possible that the proposed mechanism might have produced the significant abundance effects observed for the Sun, provided that late and relatively weak accretion did occur. The effects of cleansing may, however, be affected by outflows from the Sun, the existence and dynamics of magnetic fields and of the accretion disk, and the possible presence and location of the Early Sun in a rich stellar cluster." @default.
- W2892295841 created "2018-09-27" @default.
- W2892295841 creator A5090071078 @default.
- W2892295841 date "2018-09-07" @default.
- W2892295841 modified "2023-09-27" @default.
- W2892295841 title "Dust cleansing of star-forming gas: II. Did late accretion flows change the chemical composition of the solar atmosphere?" @default.
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