Fakultät für Physik und Astronomie
STEPHEN PHILLIPS hostreviews.co.uk / UNSPLASH

Unveiling the structure of planet-forming disks

Misato Fukagawa , Natl. Astron Obs. Japan, Osawa (Japan)

I present the images of protoplanetary disks around intermediate-mass stars with ages of a few to several million years, collected from Subaru and ALMA. Disk spatial/density structure is an important key to understand how disks evolve possibly under mutual interaction with new-born planets. In our near-infrared observations, rich structures have been uncovered such as radial gaps and spiral arms in remnant envelopes or disks. The strong non-axisymmetry has also been found with ALMA in dust continuum for a few disks with wide gaps, suggesting localized accumulation of dust particles. Although the sample size is still very small (~10), gaps and non-axisymmetry seem common, implying that the significant fraction of disks harbor stellar/planetary-mass companions, or planet-forming activity is already triggered.

Heidelberg Joint Astronomical Colloquium
22 Nov 2016, 17:15
Philosophenweg 12, großer Hörsaal

Add to calendar Add to calendar
Today:
There are no scheduled talks today.
Upcoming:
How clumpy was the intergalactic medium during reionization?
Frederick Davies
Thu, 4 Apr 2024, 11:00
TBD
TBD
Thu, 4 Apr 2024, 11:00
Recent research results from the HKU Late State stellar evolution team - Strange Galactic alignments and solving the sulphur anomaly in Planetary Nebulae
Quentin Parker
Fri, 5 Apr 2024, 11:00
TBD
TBD
Thu, 11 Apr 2024, 11:00
Explaining the simplicity of the cosmos
Prof. Neil Turok
Thu, 11 Apr 2024, 18:30