PI: Sean Brittain, Clemson U., email@example.com
Address: 118 Kinard Laboratory, Dept. of Physics & Astronomy, Clemson University, Clemson SC, 29634-0978 USA
CoI: Joan Najita, NOAO
Title: The Search for Forming Planets in Transition Disks
Abstract: The identification of giant planets in circumstellar disks is central to understanding their formation. The identification of forming planets will allow us to connect the initial conditions in disks to the kinds of planets that form and connect the initial architecture of planetary systems to the final distribution of planets observed around main sequence stars. Such observations will provide insight to the planet formation process itself by 1) determining how material accretes from the circumstellar disk through the circumplanetary disk and finally on the planet thus discerning what sets the mass of gas giant planets; 2) determining how circumplanetary disks set the initial conditions for the in situ formation of satellites (e.g., the Gallilean moons); and 3) validating indirect signposts of gas giant formation. Theory points to several signposts in disks that arise due to giant planet formation. One such signature of planet formation is non-axisymmetric thermal ro-vibrational CO emission from the circumplanetary disk feeding a forming gas giant planet. Emission arising from the circumplanetary disk will be Doppler shifted relative to the rest frame of the star and more spatially localized than emission from the outer disk. We will describe the results of our recent study of the transition object HD100546 in which this signature has been observed and propose to search for this signature in other transition disks.
Program Type: Standard/Galactic
Run 1 (2017B): GEM-S-SVC/PHNX -- 11.3hrs band 3 (GS-2017B-Q-61)
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360