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- W2150555613 abstract "Spherical accretion of dust and gas onto a gravitating object is examined under the influence of central radiation. We found that, as long as the central luminosity is less than the Eddington one for dust, the gas flow is almost Bondi type, while the dust flow is greatly affected by central radiation. For non-luminous sources, in the outer region where the gravity on the dust is balanced by the drag force, the infall velocity of dust is generally larger than the gas velocity. Both gas and dust freefall in the inner region. As the dust-to-gas ratio increases, the gas accretion rate slightly decreases, while the dust accretion rate increases. As a result, the total accretion rate increases. When the central luminosity is considered, the infall velocity of dust becomes smaller and smaller, as the central luminosity increases. Although the gas accretion rate slightly increases with luminosity, the dust accretion rate linearly decreases due to the radiation pressure. As a result, the total accretion rate decreases with luminosity. Approximate expressions for dust and gas accretion rates were obtained." @default.
- W2150555613 created "2016-06-24" @default.
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- W2150555613 date "2001-04-25" @default.
- W2150555613 modified "2023-09-27" @default.
- W2150555613 title "Dust–Gas Accretion onto a Luminous Object" @default.
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- W2150555613 doi "https://doi.org/10.1093/pasj/53.2.275" @default.
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