2 papers
astro-ph1996
Multiwavelength observations of short time-scale variability in NGC 4151. IV. Analysis of multiwavelength continuum variability
R. A. Edelson et al
This paper combines data from the three preceding papers in order to analyze the multi-waveband variability and spectral energy distribution of the Seyfert~1 galaxy NGC~4151 during…
astro-ph1993
The Environment of Lyman a Absorbers in the Sightline toward 3C273
S. L. Morris, R. J. Weymann, Alan Dressler +5
We present new ground-based data following up on the HST discovery of low-redshift Lya absorption in the sight-line to the quasar 3C273. Narrow-band filter observations show that t…