NOAO >   Observing Info >   Approved Programs >   2014B-0348

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Proposal Information for 2014B-0348


PI: Stefan Kraus, University of Exeter, skraus@astro.ex.ac.uk
Address: Astrophysics Group, Stocker Road, Exeter, EX4 4QL, United Kingdom

CoI: John Monnier, University of Michigan
CoI: Sasha Hinkley, Caltech Astronomy
CoI: Michael Ireland, Macquarie University
CoI: Catherine Espaillat, Boston University

Title: Imaging disk asymmetries and planet formation in a pre-transitional disk

Abstract: The gas and dust disks around young stars are thought to be the birthplace of planetary systems and are a key area to study if further progress is to be made on understanding the history of our solar system and our own origins. Once planets have formed in these disks, they dynamically sculpt their environment, for instance by opening tidally-cleared gaps or triggering spiral arms. The late stages of this process are likely observed in the “pre-transitional” disks. Using infrared interferometry, we resolved the gapped disk of the pre-transitional disk object V1247 Ori and find clear evidence for highly asymmetric disk structures (Kraus et al. 2013, ApJ), possibly reflecting the dynamical interaction of the disk material with sub-stellar mass bodies. GPI coronagraphic imaging in total & polarized intensity are urgently required in order to characterize the dust properties inside and outside of the gap, to image the asymmetric disk structure directly, and to search for the bodies that are responsible for the gap-clearing.


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NOAO >   Observing Info >   Approved Programs >   2014B-0348

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