Our VLA and MERLIN radio images of the HL Tau system trace the emission from the proto-planetary disc at ultra-high resolution. A candidate proto-planet is seen at tens of AU from the star, at these long wavelengths where it stands out from the bright background disc. A simulation shows that gravitational instability within the disc is capable of forming this 10 Jupiter-mass object. Submillimetre images made recently with SCUBA-2 show that HL Tau's disc is perturbed by an interaction with XZ Tau, and this may have helped trigger disc fragmentation, in a flyby event as recent as a few thousand years ago.
|Publication status||Published - 1 Sep 2011|
|Event||Extreme Solar Systems II - Wyoming, United States|
Duration: 11 Sep 2011 → 17 Sep 2011
|Conference||Extreme Solar Systems II|
|Period||11/09/11 → 17/09/11|
|Other||American Astronomical Society, ESS meeting #2, #8.05|