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Tracing large-scale structures in circumstellar disks with ALMA
Jan Philipp Ruge, Sebastian Wolf, Ana L. Uribe +1
Planets are supposed to form in circumstellar disks. The gravitational potential of a planet perturbs the disk and leads to characteristic structures, i.e. spiral waves and gaps, i…
A solution to the radiation pressure problem in the formation of massive stars
Rolf Kuiper, Hubert Klahr, Henrik Beuther +1
We review our recent studies demonstrating that the radiation pressure problem in the formation of massive stars can be circumvented via an anisotropy of the thermal radiation fiel…
Gravoturbulent Planetesimal Formation: The Positive Effect of long-lived Zonal Flows
Karsten Dittrich, Hubert Klahr, Anders Johansen
Recent numerical simulations have shown long-lived axisymmetric sub- and super-Keplerian flows in protoplanetary disks. These zonal flows are found in local as well as global simul…
Turbulence in weakly-ionized proto-planetary disks
M. Flock, Th. Henning, H. Klahr
We investigate the characteristic properties of self-sustained MRI turbulence in low-ionized proto-planetary disks. We study the transition regime between active and dead-zone, per…
Characterization of exoplanets from their formation I: Models of combined planet formation and evolution
C. Mordasini, Y. Alibert, H. Klahr +1
A first characterization of many exoplanets has recently been achieved by the observational determination of their radius. For some planets, a measurement of the luminosity has als…
Characterization of exoplanets from their formation II: The planetary mass-radius relationship
C. Mordasini, Y. Alibert, C. Georgy +3
The research of exoplanets has entered an era in which we characterize extrasolar planets. This has become possible with measurements of radii and luminosities. Meanwhile, radial v…