The Unusual 2001 Periastron Passage in the “Clockwork” Colliding‐Wind Binary WR 140 von Marchenko, S. V., Moffat, A. F. J., Ballereau, D., Chauville, J., Zorec, J., Hill, G. M., Annuk, K., Corral, L. J., Demers, H., Eenens, P. R. J., Panov, K. P., Seggewiss, W., Thomson, J. R., Villar‐Sbaffi, A.

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CCD standards for U and I in the open cluster NGC 7790 von Petrov, G., Seggewiss, W., Dieball, A., Kovachev, B.

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NGC 2571: An intermediate-age open cluster with a White Dwarf candidate von Giorgi, E. E., Vàzquez, R. A., Baume, G., Seggewiss, W., Will, J.-M.

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The Luminous Eclipsing SMC OB + WN Binary HD 5980 before and during the Recent LBV-like Outburst: An Extreme Case of Colliding Winds von Moffat, A. F. J, Marchenko, S. V, Bartzakos, P, Niemela, V. S, Cerruti, M. A, Magalhães, A. M, Balona, L, St-Louis, N, Seggewiss, W, Lamontagne, R

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A comprehensive variability study of the enigmatic WN8 stars: final results von Marchenko, S. V., Moffat, A. F. J., Eversberg, T., Hill, G. M., Tovmassian, G. H., Morel, T., Seggewiss, W.

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CCD photometry and astrometry of visual double and multiple stars of the HIPPARCOS Catalogue: II. CCD photometry and differential astrometry of 288 southern "Intermediate” systems... von Cuypers, J., Seggewiss, W.

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Remarkable long-term changes in the small Magellanic Cloud Wolf-Rayet system HD 5980 von Koenigsberger, G., Moffat, A. F. J., St-Louis, N., Auer, L. H., Drissen, L., Seggewiss, W.

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Probing the luminous stellar cores of the giant H II regions 30 DOR in the LMC and NGC 3603 in the Galaxy von MOFFAT, A. F. J, SEGGEWISS, W, SHARA, M. M

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The Wolf-Rayet population in 30 Doradus and its surroundings von MOFFAT, A. F. J, NIEMALA, V. S, PHILLIPS, M. M, CHU, Y.-H, SEGGEWISS, W

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DI Car: a cepheid von Seggewiss, W.

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The nature of Sk -67°18 in the Large Magellanic Cloud: A multiple system with an O3f$^\star$ component von Niemela, V. S., Seggewiss, W., Moffat, A. F. J.

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Resolution and evolution of the core of the giant HII region NGC 3603 von Hofmann, K.-H., Weigelt, G., Seggewiss, W.

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UBV photometry of the Wolf-Rayet stars WR137 and WR140 von Panov, K. P., Stegert, J., Seggewiss, W.

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VIOLET-DISPLACED ABSORPTION LINES IN THE SPECTRUM OF THE WOLF-RAYET STAR HD 151932 von SEGGEWISS, WILHELM

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Spectroscopic and photometric analysis of the WN7 eclipsing binary CQ Cephei von Leung, K.-C., Seggewiss, W., Moffat, A. F. J.

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Search for chromospheric MgII emission in Ap-type stars von SEGGEWISS, W

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A long-period orbit for the binary Wolf-Rayet star HD 193793, WC7 + O4-5 von Lamontagne, R., Moffat, A. F. J., Seggewiss, W.

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CCD photometry and astrometry of visual double and multiple stars of the HIPPARCOS Catalogue von Cuypers, J., Seggewiss, W.

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Wolf-rayet stars in the Magellanic Clouds. III: The WO4+O4 V binary Sk 188 in the SMC von MOFFAT, A. F. J, BREYSACHER, J, SEGGEWISS, W

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The Object R136 in the Core of the 30 Doradus Nebula von Seggewiss, W., Moffat, A.F.J.

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