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The SPHERE view of the Taurus star-forming region
A. Garufi, C. Ginski, R. G. van Holstein +31
The sample of planet-forming disks observed by high-contrast imaging campaigns over the last decade is mature enough to enable the demographical analysis of individual star-forming…
Mass segregation in star clusters is not energy equipartition
Richard J. Parker, Simon P. Goodwin, Nicholas J. Wright +2
Mass segregation in star clusters is often thought to indicate the onset of energy equipartition, where the most massive stars impart kinetic energy to the lower-mass stars and bro…
A young protoplanet candidate embedded in the circumstellar disk of HD100546
Sascha P. Quanz, Adam Amara, Michael R. Meyer +3
We present high-contrast observations of the circumstellar environment of the Herbig Ae/Be star HD100546. The final 3.8 micron image reveals an emission source at a projected separ…
Gaps in the HD169142 protoplanetary disk revealed by polarimetric imaging: Signs of ongoing planet formation?
Sascha P. Quanz, Henning Avenhaus, Esther Buenzli +3
We present H-band VLT/NACO polarized light images of the Herbig Ae/Be star HD169142 probing its protoplanetary disk as close as ~0.1" to the star. Our images trace the face-on disk…
Direct imaging constraints on planet populations detected by microlensing
Sascha P. Quanz, David Lafreniere, Michael R. Meyer +2
Results from gravitational microlensing suggested the existence of a large population of free-floating planetary mass objects. The main conclusion from this work was partly based o…
Resolving the inner regions of the HD97048 circumstellar disk with VLT/NACO polarimetric differential imaging
Sascha P. Quanz, Stephan M. Birkmann, Daniel Apai +2
Circumstellar disks are the cradles of planetary systems and their physical and chemical properties directly influence the planet formation process. As most planets supposedly form…