311 citations · 753 across the 15 of their papers we have counts for
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Mid-infrared interferometric monitoring of evolved stars - The dust shell around the Mira variable RR Aql at 13 epochs
I. Karovicova, M. Wittkowski, D. A. Boboltz +3
We obtained 13 epochs of mid-infrared interferometry with the MIDI instrument at the VLTI between April 2004 and July 2007, covering pulsation phases 0.45-0.85 within four cycles.…
Inhomogeneities in molecular layers of Mira atmospheres
M. Wittkowski, D. A. Boboltz, M. Ireland +7
We obtained K-band spectro-interferometric observations of the Miras R Cnc, X Hya, W Vel, and RW Vel with a spectral resolution of 1500 using the VLTI/AMBER instrument. We obtained…
Structure and shaping processes within the extended atmospheres of AGB stars
M. Wittkowski, D. A. Boboltz, I. Karovicova +4
We present recent studies using the near-infrared instrument AMBER of the VLT Interferometer (VLTI) to investigate the structure and shaping processes within the extended atmospher…
The extended atmospheres of Mira variables probed by VLTI, VLBA, and APEX
M. Wittkowski, D. A. Boboltz, C. de Breuck +9
We present an overview on our project to study the extended atmospheres and dust formation zones of Mira stars using coordinated observations with the Very Large Telescope Interfer…