DFG Schwerpunktprogramm 1833

DFG Schwerpunktprogramm 1833

Building a habitable earth

Over a period of 6 years, DFG is funding research projects within its SPP framework (DFG-Schwerpunktprogramm) "Building a Habitable Earth". The SPP will contribute to the still open question how Earth became the only known habitable planet.

Evolution of the gas (dashed lines), dust (dotted lines) and planetesimal (solid lines) surface density for a simulation without gas evolution (left panels) and with gas evolution (right panels), where the trap efficiency εp is set to 10%. The upper panels show a time series of the surface densities as a function of radius and the lower ones the densities at local positions  as a function of time. The underlaying gray lines in the upper panels denote the minimum mass Solar Nebula. The characteristic kink around 0.8AU is caused by the iceline within which water evaporates.

Members working on this project

Hubert Klahr

Research Group Leader

We are participating in this collaboration with the project Identifying the origin of Earth's building material: Where do the earth building Planetesimals and Pebbles originate from? A numerical approach of the accretion phase of the earth.

Planetesimal Formation

This graph shows how the number of planetesimals in a protoplanetary disk increases as a function of time. Different curves represent different models where the level of turbulence (α), and the formation efficiency was varied and different drag regimes were considered (St = 1/0 corresponds to Stokes drag considered/not considered). Use the buttons to highlight various parameters.

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