Crenshaw, DM; RodriguezPascual, PM; Penton, SV; Edelson, RA; Alloin, D; Ayres, TR; Clavel, J; Horne, K; Johnson, WN; Kaspi, S; Korista, KT; Kriss, GA; Krolik, JH; Malkan, MA; Maoz, D; Netzer, H; OBrien, PT; Peterson, BM; Reichert, GA; Shull, JM; Ulrich, MH; Wamsteker, W; Warwick, RS; Yaqoob, T; Balonek, TJ; Barr, P; Bromage, GE; Carini, M; Carone, TE; Cheng, FZ; Chuvaev, KK; Dietrich, M; Doroshenko, VT; DultzinHacyan, D; Filippenko, AV; Gaskell, CM; Glass, IS; Goad, MR; Hutchings, J; Kazanas, D; Kollatschny, W; Koratkar, AP; Laor, A; Leighly, K; Lyutyi, VM; MacAlpine, GM; Malkov, YF; Martin, PG; McCollum, B; Merkulova, NI; Metik, L; Metlov, VG; Miller, HR; Morris, SL; Oknyanskij, VL; Penfold, J; Perez, E; Perola, GC; Pike, G; Pogge, RW; Pronik, I; Pronik, VI; Ptak, RL; RecondoGonzalez, MC; RodriguezEspinoza, JM; Rokaki, EL; Roland, J; Sadun, AC; Salamanca, I; SantosLleo, M; Sergeev, SG; Smith, SM; Snijders, MAJ; Sparke, LS; Stirpe, GM; Stoner, RE; Sun, WH; vanGroningen, E; Wagner, RM; Wagner, S; Wanders, I; Welsh, WF; Weymann, RJ; Wilkes, BJ; Zheng, W
1996
ASTROPHYSICAL JOURNAL
We present the results of an intensive ultraviolet monitoring campaign on the Seyfert 1 galaxy NGC 4151, as part of an effort to study its short-timescale variability over a broad range in wavelength. The nucleus of NGC 4151 was observed continuously with the International Ultraviolet Explorer for 9.3 days, yielding a pair of LWP and SWP spectra every similar to 70 minutes, and during 4 hr periods for 4 days prior to and 5 days after the continuous-monitoring period. The sampling frequency of the observations is an order of magnitude higher than that of any previous UV monitoring campaign on a Seyfert galaxy.