Markus Wittkowski

Astronomer
European Southern Observatory
User Support Department
Karl-Schwarzschild-Str. 2
D-85748 Garching bei München
Germany

E-mail: mwittkow@eso.org
Phone : +49-89-3200-6769
Fax     : +49-89-3200-6898

European Southern Observatory (ESO)
ESO User Support Department (USD)
ESO Science Activities

Suggested PhD Thesis Topic




ESO press release 25/07 "Chronicle of a Death Foretold. Two of the World's Largest Interferometric Facilities Team-up to Study a Red Giant Star ".









Based on: Wittkowski, M., Boboltz, D. A., Ohnaka, K., Driebe, T., & Scholz, M. 2007, A&A, 470, 191-210: The Mira variable S Orionis: relationships between the photosphere, molecular layer, dust shell, and SiO maser shell at 4 epochs.

Scientific Interests:

Publications:

List of publications (pdf file)
Publications (link to ADS)
Presentations

Selected articles on stellar atmospheres:

Wittkowski, M., Hummel, C. A., Johnston, K. J., Mozurkewich, D., Hajian, A. R., & White, N. M. 2001, A&A 377, 981-993: Direct multi-wavelength limb-darkening measurements of three late-type giants with the Navy Prototype Optical Interferometer.

Wittkowski, M., Aufdenberg, J. P., & Kervella, P. 2004, A&A 413, 711-723: Tests of stellar model atmospheres by optical interferometry: VLTI/VINCI limb-darkening measurements of the M4 giant Psi Phe.

Wittkowski, M., Hummel, C.A., Aufdenberg, J. P., & Roccatagliata, V. 2006, A&A, 460, 843-854: Tests of stellar model atmospheres by optical interferometry III: NPOI and VINCI interferometry of the M0 giant  gamma Sge covering 0.5-2.2 mu.

Wittkowski, M., Aufdenberg, J. P., Driebe, T., Roccatagliata, V., Szeifert, T., & Wolff, B. 2006, A&A, 460, 855-864 : Tests of stellar model atmospheres by optical interferometry IV: VINCI interferometry and UVES spectroscopy of Menkar.

Selected articles on circumstellar environments and mass loss:

Wittkowski, M., Langer, N., & Weigelt, G. 1998, A&A,  340, L39-L42: Diffraction-limited speckle-masking interferometry of the red supergiant VY CMa.

Boboltz, D. A., & Wittkowski, M. 2005, ApJ, 618, 953-961: Joint VLBA/VLTI observations of the Mira variable S Orionis.
NRAO's VLBA image of the month.

Wittkowski, M., Boboltz, D. A., Ohnaka, K., Driebe, T., & Scholz, M. 2007, A&A, 470, 191-210: The Mira variable S Orionis: relationships between the photosphere, molecular layer, dust shell, and SiO maser shell at 4 epochs.
ESO press release 25/07 "Chronicle of a Death Foretold. Two of the World's Largest Interferometric Facilities Team-up to Study a Red Giant Star ".

Wittkowski, M., Boboltz, D. A., Driebe, T., Le Bouquin, J.-B., Millour, F., Ohnaka, K., & Scholz, M. 2008, A&A,  479, L21-L24: J, H, K spectro-interferometry of the Mira variable S Orionis.

Selected articles on AGN:

Wittkowski, M., Balega, Y., Beckert, T., Duschl, W. J., Hofmann, K.-H., & Weigelt, G. 1998, A&A 329, L45-L48: Diffraction-limited 76 mas speckle masking  observations of the core of NGC 1068 with the SAO 6 m telescope.

Wittkowski, M., Kervella, P., Arsenault, R., Paresce, F., Beckert, T, & Weigelt, G. 2004, A&A, 418, L39-L42: VLTI/VINCI observations of the nucleus of NGC 1068 using the adaptive optics system MACAO.

Weigelt, G., Wittkowski, M., Balega, Y. Y., Beckert, T., Duschl, W. J., Hofmann, K.-H., Men'shchikov, A. B., & Schertl, D. 2004, A&A, 425, 77-87: Diffraction-limited bispectrum speckle interferometry of the nuclear region of the Seyfert Galaxy NGC 1068 in the H and K' bands.

Selected articles on the VLTI:

Wittkowski, M., Comerón, F., Glindemann, A., Hummel, C., Morel, S., Percheron, I., Petr-Gotzens, M., & Schöller, M. 2005, The Messenger, 119, 14-17: Observing with the ESO VLT Interferometer.

Wittkowski, M., Paresce, F., Chesneau, O., Kervella, P., Meilland, A., Meisenheimer, K., & Ohnaka, K. 2005, The Messenger, 119, 36-42: Recent Astrophysical Results from the VLTI.

Wittkowski, M. 2006, VLTI School proceedings: MIDI and AMBER from the user's point of view.

VLTI delay line restrictions

Links to previous affiliations: 

Institute for Theoretical Astrophysics (ITA) of the University of Heidelberg
Max-Planck-Institut für Radioastronomie (MPIfR)  /  Infrared Interferometry Group
United States Naval Observatory (USNO) /  Navy Prototype  Optical Interferometer  (NPOI)
ESO Santiago & Paranal
Travel photos