• Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. VI. Variability of NGC 3783 from ground-based data 

      Stirpe, Giovanna M.; Winge, Claudia; Altieri, B.; Alloin, Danielle Marie; Aguero, E.L.; Anupama, G.C.; Ashley, R.; Bertram, R.; Calderon, J.H.; Catchpole, R.M.; Corradi, R.L.M.; Covino, E.; Dottori, Horacio Alberto; Feast, M.W.; Ghosh, K.K.; Hutton, R. Gil; Glass, I.S.; Grebel, Eva K.; Jorda, L.; Koen, C.; Laney, C.D.; Maia, Marcio Antonio Geimba; Marang, Fred; Mayya, Y.D.; Morrell, Nidia; Nakada, Y.; Pastoriza, Miriani Griselda; Pati, A.K.; Pelat, D.; Peterson, Bradley M.; Prabhu, T.P.; Roberts, G.; Sagar, R.; Salamanca, I.; Sekiguchi, Kazuhiro; Storchi-Bergmann, Thaisa; Subramaniam, A.; Villada, M.; Wagner, R.M.; Whitelock, P.A.; Winkler, Hartmut; Clavel, J.; Dietrich, Matthias; Kollatschny, W.; Perola, G.C.; Van Winckel, H.; Van Wyk, Francois; O'Brien, P.T.; Recondo-Gonzalez, M.C.; Rodriguez-Pascual, P.M.; Santos-Lleo, M. (1994) [Artigo de periódico]
      The Seyfert 1 galaxy NGC 3783 was intensely monitored in several bands between 1991 December and 1992 August. This paper presents the results from the ground-based observations in the optical and near-IR bands, which ...
    • Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. X. Variability of Fairall 9 from optical data 

      Santos-Lleo, M.; Chatzichristou, E.; Oliveira, Claudia Lucia Mendes de; Winge, Claudia; Alloin, Danielle Marie; Peterson, Bradley M.; Rodriguez-Pascual, P.M.; Stirpe, Giovanna M.; Beers, T.C.; Bragaglia, Angela; Claeskens, J.-F.; Federspiel, M.; Giannuzzo, E.; Gregorio-Hetem, J.; Mathys, G.; Salamanca, I.; Stein, P.; Stenholm, B.; Wilhelm, Ronald; Zanin, C.; Albrecht, P.; Calderon, J.H.; Caretta, C.A.; Carranza, Gustavo Jose; Costa, Roberto Dell'Aglio Dias da; Díaz, Rubén Joaquín; Dietrich, Matthias; Dottori, Horacio Alberto; Elizalde, Flavio; Goldes, G.; Ghosh, K.K.; Maia, M.A.G.; Paolantonio, S.; Rodrigues, Irapuan; Rodrigues-Ardila, Alberto; Schmitt, Henrique Roberto; Soundararajaperumal, S.; Souza, R.E. de; Willmer, C.N.A.; Zheng, W. (1997) [Artigo de periódico]
      The results of an optical monitoring campaign on the active nucleus in the luminous Seyfert 1 galaxy Fairall 9 are presented. This campaign was undertaken in parallel with ultraviolet spectroscopic monitoring with the IUE ...