R. Ptak

Publications by Year

Research Areas

Adaptive optics and wavefront sensing, Astronomical Observations and Instrumentation, Galaxies: Formation, Evolution, Phenomena, Stellar, planetary, and galactic studies, Nuclear physics research studies

Most-Cited Works

• → Steps toward determination of the size and structure of the broad-line region in active galatic nuclei. 8: an intensive HST, IUE, and ground-based study of NGC 5548(1995)232 cited
• → Multiwavelength Observations of Short-Timescale Variability in NGC 4151. IV. Analysis of Multiwavelength Continuum Variability(1996)178 cited
• Evidence of 45-minute Changes in the UV Continuum and Emission Lines of NGC 4151(1987)
• Physical Conditions in Seyfert Galaxy Nuclei.(1975)
• Steps toward determination of the size and structure of the broad-line region in active galactic nuclei .11. Intensive monitoring of the ultraviolet spectrum of NGC 7469(1997)