Studying the formation of planets close to their host stars by observations has been extremely challenging so far. As part of an international collaboration, scientists of the Max Planck Institute for Astronomy in Heidelberg, Germany, have employed a new instrument called MATISSE which has now uncovered evidence for a vortex at the inner rim of a planet-forming disk around a young star. It appears to move on an orbit around its star similar to Mercury’s orbit around the Sun. Astronomers think such vortices are sites where small particles converge and grow to form planets’ building blocks. MPIA contributed considerably to building MATISSE, an infrared imager for ESO’s Very Large Telescope Interferometer.
“The higher dust density induces faster grain growth than anywhere else in the disk