NOAO >   Observing Info >   Approved Programs >   2013B-0376

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Proposal Information for 2013B-0376


PI: Cade Adams, Clemson University, scadams@clemson.edu
Address: Physics Department, 118 Kinard Laboratory, Clemson, SC 29634-0978, USA

CoI: Sean Brittain, Clemson University
CoI: Joan Najita, NOAO
CoI: John Carr, NRL
CoI: Ignacio Mendigutia, Clemson University

Title: A study of the OH emission in the disk around the Herbig Ae star V380 Ori

Abstract: Hydrodynamic simulations of forming gas giant planets indicate that they drive a persistent eccentricity in the vicinity of their orbit. Emission lines arising from gas in an eccentric orbit are asymmetric. Observation of such lines is an attractive tool for identifying forming gas giant planets. However, the asymmetry could be generated by stochastic inhomogeneities in the disk – in which case the profile of the emission lines will be variable. If the asymmetry is due to the eccentricity of the disk, then the line profiles should not vary. We can investigate whether persistent asymmetric OH emission lines are a dynamical signature of a massive companion by observing these lines in a source with a known companion. V380 Ori is an ideal target for this investigation as it is a spectroscopic binary with a mass ratio of 2.9 and reveals asymmetric OH emission lines. We propose to acquire follow up observation of the OH emission lines with the Phoenix spectrograph. The proposed observations will test the validity of a new approach for identifying disks with ongoing planet formation.


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