Homepage of Markus Wittkowski

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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

Scientific Interests:

Fundamental stellar properties
Atmospheres and mass-loss of cool evolved stars
Circumnuclear environment of active galactic nuclei
Optical long-baseline interferometry
Synergy of optical and radio interferometry

CV:

Present (since 2003) User Support Astronomer and Associate Faculty Astronomer at the European Southern Observatory, Garching, Germany
2001-2003 VLTI Astronomer and Assistent Faculty Astronomer at the European Southern Observatory, Chile
2000-2001 Research Associate (Feodor-Lynen Fellow of the Humboldt Foundation) at the U.S. Naval Observatory, Washington, DC, USA
1998-1999 Staff Astronomer at the Max-Planck-Institut für Radioastronomie, Bonn, Germany
1998 PhD (Dr. rer. nat, Physics, Astronomy), University of Bonn, Germany
1995 Diploma (Physics), University of Heidelberg, Germany

Publications:

Publications (link to ADS)

Selected articles on stellar atmospheres of red giants:

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.

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., & 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., 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.

Selected articles on atmospheres, circumstellar environments and mass loss of AGB stars and red supergiants:

Wittkowski, M., Chiavassa, A., Freytag, B., Scholz, M., Hoefner, S., Karovicova, I., & Whitelock, P. A.. 2016, A&A, 587, A12: Near-infrared spectro-interferometry of Mira variables and comparisons to 1D dynamic model atmospheres and 3D convection simulations.

Wittkowski, M., Hauschildt, P. H., Arroyo-Torres, B., & Marcaide, J. M. 2012, A&A, 540, L12: Fundamental properties and atmospheric structure of the red supergiant VY Canis Majoris based on VLTI/AMBER spectro-interferometry.

Wittkowski, M., Boboltz, D. A., Ireland, M., Karovicova, I., Ohnaka, K., Scholz, M., van Wyk, F., Whitelock, P., Wood, P. R., & Scholz, M. 2011, A&A, 532, L7: Inhomogeneities in molecular layers of Mira atmospheres.

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.

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

Selected articles on AGN:

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

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.

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.

Selected articles on the VLT Interferometer:

Wittkowski, M., Ballester, P., Bonneau, D., Chelli, A., Chesneau, O., Cruzalebes, P., Duvert, G., Hummel, C., Lafrasse, S., Mella, G., Melnick, J., Merand, A., Mourard, D., Percheron, I., Sacuto, S., Shabun, K., Stefl, S., Vinther, J. 2011, The Messenger, 145, 7-9: CalVin 3 - A New Release of the ESO Calibrator Selection Tool for the VLT Interferometer

Wittkowski, M., & Testi, L. 2010, The Messenger, 140, 53-56: Report on the ESO Workshop The Origin and Fate of the Sun: Evolution of Solar-mass Stars Observed with High Angular Resolution

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

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.

Disclaimer: Any view or statement made on this webpage is not part of an official standpoint of ESO.
Last updated: 26 Feb. 2016
Markus Wittkowski