On the growth efficiency of pebble-accreting planetesimals at 1 AU orbital distance from the star

  • Rico Visser University of Amsterdam

Abstract

One method to build planets is through pebble accretion, where a planetesimal sweeps up pebbles in the protoplanetary disk surrounding the star. I investigated the growth efficiency of planetesimals by numerically integrating the equation of motion for variable sized pebbles. These pebbles experience gas drag and interact gravitationally with the planetesimal and the star. The results are obtained by quantifying accretion in terms of a growth timescale. I obtained a finite transition between the flow-dominated regime \cite{guillot} and the settling regime \cite{Ormel}. A barrier is preventing growth of planetesimals sweeping up particles smaller than 1 centimeter.

Author Biography

Rico Visser, University of Amsterdam
Anton Pannekoek Institute for Astronomy
How to Cite
VISSER, Rico. On the growth efficiency of pebble-accreting planetesimals at 1 AU orbital distance from the star. Student Undergraduate Research E-journal!, [S.l.], v. 1, nov. 2015. ISSN 2468-0443. Available at: <https://journals.open.tudelft.nl/index.php/sure/article/view/1023>. Date accessed: 22 may 2019.
Published
2015-11-20