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Status: Unchecked ×Keyword: pebble drift ×Clear all

3 claims from 1 paper

1. Physics and Astronomy › Astrophysics and Star Formation Studies

   Close-in planetesimal formation by pile-up of drifting pebbles

   Drążkowska, Alibert and Moore · Astronomy and Astrophysics · 2016

   The authors combined models of disc evolution, dust growth and drift, and planetesimal formation, and found that pebbles piling up in the inner disc create conditions for planetesimals to form in a narrow ring.

   Unchecked3 claims
   Show 3 claims

   1. Unchecked“The pile-up of pebbles in the inner disc provides local conditions where the streaming instability is effective.”
   2. UncheckedIn the paper's models, planetesimals form in a ring whose inner edge is at 0.3 to 1 AU from the star and whose width is 0.3 to 3 AU.“Planetesimals form in an annulus with its inner edge lying between 0.3 AU and 1 AU and its width ranging from 0.3 AU to 3 AU.”
   3. UncheckedIn the authors' models, the planetesimals that form have a surface density that falls off with distance much more steeply than the starting disc's profile.“The resulting surface density of planetesimals follows a radial profile that is much steeper than the initial disc profile.”