1980.5                     1983.9                1986.4                         1988.2                   1992.2                    1994.7

Parsec-scale morphology evolution of the superluminal quasar 1642+690. The southernmost
feature is moving at a superluminal speed of ~9c (Venturi et al. 1997).
 

PKS 1510-089  VLBI Images

Published papers
 

Venturi T., Pearson T.J., Barthel P.D., Herbig T., The Superluminal Character of the Compact Steep Spectrum Quasar 3C216, 1993, Astron. Astrophys.  271, 65

Venturi T., Readhead A.C.S., Marr J.M., Backer D.C., Subparsec-scale Radio Structure inNGC1275: Complex Structure in the Vicinity of the Central Engine, 1993, ApJ.  411, 552

Guirado, J.C., Marcaide, J.M., Alberdi, A., Elosegui, P., Ratner, M.I., Shapiro, I.I., Kilger, R., Mantovani, F., Venturi T., Rius, A., Ros, E., Trigilio, C., Whitney, A.R., 1995, Proper Motion of Components in 4C39.25, Astronomical Journal 110, 2586

Venturi T., Pearson T.J., Barther, P.D., Unwin S.C., The Parsec-Scale Evolution of the SuperluminalQuasar 1642+690, 1997, A&A 325, 484

Hong X.Y., Venturi T.,  Wan S.T. Jang D.R., Shen Z.-Q., Liu X., Nicolson G., Umana G.,  VLBI
Observations of 21 Extragalctic Radio Sources. Search for Superluminal Sources in the Mid-Southern  Hemisphere, 1998 A&AS, in press
 

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