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Your search keyword '"Danchi, W. C"' showing total 17 results
Start Over Author "Danchi, W. C" Publication Type Books
17 results on '"Danchi, W. C"'

12. MATISSE

Author

Lopez, B., primary, Lagarde, S., additional, Wolf, S., additional, Jaffe, W., additional, Weigelt, G., additional, Antonelli, P., additional, Abraham, P., additional, Augereau, J.-Ch., additional, Beckman, U., additional, Behrend, J., additional, Berruyer, N., additional, Bresson, Y., additional, Chesneau, O., additional, Clausse, J. M., additional, Connot, C., additional, Danchi, W. C., additional, Delbo, M., additional, Demyk, K., additional, Domiciano, A., additional, Dugué, M., additional, Glazenborg, A., additional, Graser, U., additional, Hanenburg, H., additional, Henning, Th., additional, Heininger, M., additional, Hofmann, K.-H., additional, Hugues, Y., additional, Jankov, S., additional, Kraus, S., additional, Laun, W., additional, Leinert, Ch., additional, Linz, H., additional, Matter, A., additional, Mathias, Ph., additional, Meisenheimer, K., additional, Menut, J.-L., additional, Millour, F., additional, Mosoni, L., additional, Neumann, U., additional, Niedzielski, A., additional, Nussbaum, E., additional, Petrov, R., additional, Ratzka, Th., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Schertl, D., additional, Schmider, F.-X., additional, Stecklum, B., additional, Thiebaut, E., additional, Vakili, F., additional, Wagner, K., additional, Waters, L. B. F. M., additional, Absil, O., additional, Hron, J., additional, Nardetto, N., additional, Olofsson, J., additional, Valat, B., additional, Vannier, M., additional, Goldman, B., additional, Hönig, S., additional, and Cotton, W. D., additional

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15. Mid-Infrared Spectrally-Dispersed Visibilities of Massive Stars Observed with the MIDI Instrument on the VLTI.

Author

Leibundgut, Bruno, Richichi, A., Delplancke, F., Paresce, F., Chelli, A., Wallace, D. J., Rajagopal, J., Barry, R., Richardson, L. J., Lopez, B., Chesneau, O., and Danchi, W. C.

Abstract

The mechanism driving dust production in massive stars remains somewhat mysterious. However, recent aperture-masking and interferometric observations of late-type WC Wolf-Rayet (WR) stars strongly support the theory that dust formation in these objects is a result of colliding winds in binaries. Consistent with this theory, there is also evidence that suggests the prototypical Luminous Blue Variable (LBV) star, Eta Carinae, is a binary. To explore and quantify this possible explanation, we have conducted a high resolution interferometric survey of late-type massive stars utilizing the VLTI, Keck, and IOTA interferometers. We present here the motivation for this study as well as the first results from the MIDI instrument on the VLTI. (Details of the Keck Interferometer and IOTA interferometer observations are discussed in this workshop by Rajagopal et al.). Our VLTI study is aimed primarily at resolving and characterizing the dust around the WC9 star WR 85a and the LBV WR 122, both dust-producing but at different phases of massive star evolution. The pectrally-dispersed visibilities obtained with the MIDI observations will provide the first steps towards answering many outstanding issues in our understanding of this critical phase of massive star evolution [ABSTRACT FROM AUTHOR]

Published
2008
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16. The Fourier-Kelvin Stellar Interferometer: A Progress Report and Preliminary Results from our Laboratory Testbed.

Author

Leibundgut, Bruno, Richichi, A., Delplancke, F., Paresce, F., Chelli, A., Barry, R. K., Danchi, W. C., Rajagopal, J., Richardson, L. J., Kuchner, M., Wallace, D., Chambers, V. J., Martino, A., Traub, W., Ford, H., Allen, R. J., and Seager, S.

Abstract

The Fourier-Kelvin Stellar Interferometer (FKSI) is a passively cooled, space-borne interferometer that has been developed for high angular resolution astrophysics in the near-to-mid IR wavelength range (3-8 microns). The scientific emphasis of the mission is on the direct detection of extrasolar giant planets, characterization of their atmospheres, and observation of secular changes in their atmospheric spectra. FKSI will also facilitate the search for brown dwarfs and Jupiter and sub-Jupiter mass planets and the study of the evolution of protostellar systems from the collapse of the precursor molecular cloud core through the formation of the disk surrounding the protostar, the formation of planets in the disk, and subsequent dispersal of the disk material. FKSI could also play a powerful role in the investigation of the structure of active galactic nuclei and extra-galactic star formation. While FKSI is a high angular resolution system complementary to JWST, it is also an important scientific and technological pathfinder for the TPF Interferometer and Darwin missions as well as NASA Vision missions SPIRIT, SPECS, and SAFIR. [ABSTRACT FROM AUTHOR]

Published
2008
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17. Chemistry of the orion molecular cloud core.

Author

Araki, H., Brézin, E., Ehlers, J., Frisch, U., Hepp, K., Jaffe, R. L., Kippenhahn, R., Weidenmüller, H. A., Wess, J., Zittartz, J., Beiglböck, W., Winnewisser, Gisbert, Pelz, Guido C., Sutton, E. C., Peng, R., Danchi, W. C., Jaminet, P. A., Sandell, G., and Russell, A. P. G.

Published
1995
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