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21 papers · 2 filters
Highly inclined and eccentric massive planets. II. Planet-planet interactions during the disc phase
Sotiris Sotiriadis, Anne-Sophie Libert, Bertram Bitsch +1
We aim to investigate the influence of the eccentricity and inclination damping due to planet-disc interactions on the final configurations of the systems, generalizing previous st…
Initial mass function of planetesimals formed by the streaming instability
Urs Schäfer, Chao-Chin Yang, Anders Johansen
The streaming instability is a mechanism to concentrate solid particles into overdense filaments that undergo gravitational collapse and form planetesimals. However, it remains unc…
Concentrating small particles in protoplanetary disks through the streaming instability
Chao-Chin Yang, Anders Johansen, Daniel Carrera
Laboratory experiments indicate that direct growth of silicate grains via mutual collisions can only produce particles up to roughly millimeters in size. On the other hand, recent…
Kepler-11 is a Solar Twin: Revising the Masses and Radii of Benchmark Planets Via Precise Stellar Characterization
Megan Bedell, Jacob L. Bean, Jorge Melendez +7
The six planets of the Kepler-11 system are the archetypal example of a population of surprisingly low-density transiting planets revealed by the Kepler mission. We have determined…
Atmospheric Signatures of Giant Exoplanet Formation by Pebble Accretion
Nikku Madhusudhan, Bertram Bitsch, Anders Johansen +1
Atmospheric chemical abundances of giant planets lead to important constraints on planetary formation and migration. Studies have shown that giant planets that migrate through the…
The unstable fate of the planet orbiting the A-star in the HD 131399 triple stellar system
Dimitri Veras, Alexander J. Mustill, Boris T. Gaensicke
Validated planet candidates need not lie on long-term stable orbits, and instability triggered by post-main-sequence stellar evolution can generate architectures which transport ro…