NOAO >   Observing Info >   Approved Programs >   2013A-0151

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Proposal Information for 2013A-0151


PI: Brian Kloppenborg, Max Planck Institute for Radio Astronomy, bkloppen@mpifr.de
Address: Infrared Astronomy, 69 Auf dem Hugel, Bonn 53010, Germany

CoI: Simone Antoniucci, INAF Astronomical Observatory of Rome
CoI: Gianluca Li Causi, INAF Astronomical Observatory of Rome
CoI: Dario Lorenzetti, INAF Astronomical Observatory of Rome
CoI: Teresa Giannini, INAF Astronomical Observatory of Rome
CoI: Gerd Weigelt, Max Planck Institute for Radio Astronomy
CoI: Makoto Kishimoto, Max Planck Institute for Radio Astronomy

Title: Unveiling the inner structure of EXor eruptive variables

Abstract: We plan to conduct the first comprehensive high spatial resolution study of EXor objects in order to understand the mechanism regulating their recurrent accretion outburst and to access the differences/similarities with respect to other classes of YSO objects such as FUors and classical T Tauri stars. Here we propose a mini survey of four EXors that are observable with both CHARA and the VLTI. We will derive the properties of the inner/outer disk and of emission line regions with radiative transfer codes and compare the results to those obtained for T Tauri stars. As the objects will most likely be in quiescence, these interferometric data will serve as a pre-outburst baseline for a future comparative analysis between quiescence and outburst phases, which we plan to perform. To this aim we are now beginning a photometric and spectroscopic EXor monitoring program that will ensure we promptly detect any future outburst of known EXors.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013A-0151

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