Protostars and Planets VI, Heidelberg, July 15-20, 2013
Poster 1H031
Mid-infrared variability of low-mass young stars studied with VLTI/MIDI: The cases of V1647 Ori and DG Tau
Mosoni, Laszlo (Konkoly Astronomical Institute, MTA Research Centre for Astronomy and Earth Sciences)
Sipos, Nikoletta (ETH Zurich, Switzerland)
Gabanyi, Krisztina (Konkoly Astronomical Institute, MTA Research Centre for Astronomy and Earth Sciences)
Juhasz, Attila (Leiden University, the Netherlands)
Abraham, Peter (Konkoly Astronomical Institute, MTA Research Centre for Astronomy and Earth Sciences)
Henning, Thomas (MPIA Heidelberg, Germany)
Jaffe, Walter (Leiden University, the Netherlands)
Kospal, Agnes (ESA Noordwijk, the Netherlands)
Kun, Maria (Konkoly Astronomical Institute, MTA Research Centre for Astronomy and Earth Sciences)
Leinert, Christoph (MPIA Heidelberg)
Moor, Attila (Konkoly Astronomical Institute, MTA Research Centre for Astronomy and Earth Sciences)
Mueller, Andre (ESO Garching, Germany)
Quanz, Sascha P. (ETH Zurich, Switzerland)
Ratzka, Thorsten (Universitaets-Sternwarte München, Germany)
Schegerer, Alexander A. (MPIA Heidelberg, Germany)
van Boekel, Roy (MPIA Heidelberg, Germany)
Wolf, Sebastian (Christian-Albrechts-Universitaets Kiel, Germany)
Abstract:
Low-mass young stellar objects (YSOs) show variability not just at optical and near-infrared wavelengths, but also in the mid-infrared. The amplitude and time-scale of the brightness variations depend on the underlying physical mechanisms (e.g., dust processing, grain growth) and the structure of the circumstellar material. Variability studies can therefore provide us information on the structure and evolution of circumstellar material and can help to understand the initial conditions for planet formation. We studied the structure of the circumstellar material at a several AU scale around two low-mass YSOs, V1647 Ori and DG Tau. For both objects, we obtained multi-epoch mid-infrared interferometric observations with MIDI (Leinert et al. 2003), the mid-infrared instrument on the Very Large Telescope Interferometer (ESO/VLTI).
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