65 citations · 67 across the 3 of their papers we have counts for
8 papers · 1 filter
VLTI observations of AGB stars
M. Wittkowski, D. A. Boboltz, T. Driebe +1
We report on recent observations of AGB stars obtained with the VLT Interferometer (VLTI). We illustrate in general the potential of interferometric measurements to study stellar a…
Fundamental stellar parameters
M. Wittkowski
I present a discussion of fundamental stellar parameters and their observational determination in the context of interferometric measurements with current and future optical/infrar…
VLTI/VINCI observations of the nucleus of NGC 1068 using the adaptive optics system MACAO
M. Wittkowski, P. Kervella, R. Arsenault +3
We present the first near-infrared K-band long-baseline interferometric measurement of the prototype Seyfert 2 galaxy NGC 1068 with resolution lambda/B \~ 10 mas obtained with the…
Tests of stellar model atmospheres by optical interferometry: VLTI/VINCI limb-darkening measurements of the M4 giant psi phe
M. Wittkowski, J. P. Aufdenberg, P. Kervella
We present K-band interferometric measurements of the limb-darkened intensity profile of the M4 giant star psi Phoenicis obtained with VLTI/VINCI. High-precision squared visibility…
Joint VLTI/VLBA observations of Mira stars
Markus Wittkowski, David A. Boboltz
We present preliminary results on a recently started project to perform coordinated observations of Mira stars using near-infrared and radio long-baseline interferometry. We concen…
Round Table Summary: Stellar interferometry as a tool to investigate atmospheres and to compare observations with models
Markus Wittkowski
Long-baseline interferometry at optical and near-infrared wavelengths is an emerging technology which is quickly becoming a useful tool to investigate stellar atmospheres and to co…