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Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XV. Long-Term Optical Monitoring of NGC 5548
B. M. Peterson, A. J. Barth, P. Berlind +34
We present the results of three years of ground-based observations of the Seyfert 1 galaxy NGC 5548, which combined with previously reported data, yield optical continuum and broad…
The Relative Lens-Source Proper Motion in MACHO 98-SMC-1
The PLANET Collaboration, M. D. Albrow, J. -P. Beaulieu2 +18
We present photometric and spectroscopic data for the second microlensing event seen toward the Small Magellanic Cloud (SMC), MACHO-98-SMC-1. The lens is a binary. We resolve the c…
Optical Continuum and Emission-Line Variability of Seyfert 1 Galaxies
Bradley M. Peterson, Ignaz Wanders, Ray Bertram +3
We present the light curves obtained during an eight-year program of optical spectroscopic monitoring of nine Seyfert 1 galaxies: 3C 120, Akn 120, Mrk 79, Mrk 110, Mrk 335, Mrk 509…