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Pebble accretion is the accumulation of particles, ranging from centimeters up to meters in diameter, into planetesimals in a protoplanetary disk that is enhanced by aerodynamic drag from the gas present in the disk. This drag reduces the relative velocity of pebbles as they pass by larger bodies, preventing some from escaping the body's gravity. These pebbles are then accreted by the body after spiraling or settling toward its surface. This process increases the cross section over which the large bodies can accrete material, accelerating their growth. The rapid growth of the planetesimals via pebble accretion allows for the formation of giant planet cores in the outer Solar System before the dispersal of the gas disk. A reduction in the size of pebbles as they lose water ice after crossin

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  • La acreción de aerolitos es un fenómeno espacial por el que se produce la agregación de objetos cuyos tamaños varían desde centímetros hasta varios metros de diámetro, formando planetesimales en un disco protoplanetario, efecto que se ve reforzado por la resistencia de frenado que ejercen estas partículas. El rápido crecimiento de los planetesimales a través de la acreción de materiales permitió la formación de núcleos planetarios gigantes en el sistema solar exterior con anterioridad a la dispersión del disco de gas. Una reducción en el tamaño de los aerolitos al perder hielo de agua después de cruzar la línea de hielo y una densidad decreciente de gas con la distancia al Sol, redujeron la velocidad de acreción de aerolitos en el sistema solar interno, resultando en planetas terrestres más pequeños, una reducida masa de Marte y un cinturón de asteroides también de baja masa. (es)
  • Pebble accretion is the accumulation of particles, ranging from centimeters up to meters in diameter, into planetesimals in a protoplanetary disk that is enhanced by aerodynamic drag from the gas present in the disk. This drag reduces the relative velocity of pebbles as they pass by larger bodies, preventing some from escaping the body's gravity. These pebbles are then accreted by the body after spiraling or settling toward its surface. This process increases the cross section over which the large bodies can accrete material, accelerating their growth. The rapid growth of the planetesimals via pebble accretion allows for the formation of giant planet cores in the outer Solar System before the dispersal of the gas disk. A reduction in the size of pebbles as they lose water ice after crossing the ice line and a declining density of gas with distance from the sun slow the rates of pebble accretion in the inner Solar System resulting in smaller terrestrial planets, a small mass of Mars and a low mass asteroid belt. (en)
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  • La acreción de aerolitos es un fenómeno espacial por el que se produce la agregación de objetos cuyos tamaños varían desde centímetros hasta varios metros de diámetro, formando planetesimales en un disco protoplanetario, efecto que se ve reforzado por la resistencia de frenado que ejercen estas partículas. (es)
  • Pebble accretion is the accumulation of particles, ranging from centimeters up to meters in diameter, into planetesimals in a protoplanetary disk that is enhanced by aerodynamic drag from the gas present in the disk. This drag reduces the relative velocity of pebbles as they pass by larger bodies, preventing some from escaping the body's gravity. These pebbles are then accreted by the body after spiraling or settling toward its surface. This process increases the cross section over which the large bodies can accrete material, accelerating their growth. The rapid growth of the planetesimals via pebble accretion allows for the formation of giant planet cores in the outer Solar System before the dispersal of the gas disk. A reduction in the size of pebbles as they lose water ice after crossin (en)
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  • Acreción de aerolitos (es)
  • Pebble accretion (en)
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