104 citations · 468 across the 10 of their papers we have counts for
9 papers
Space Telescope and Optical Reverberation Mapping Project VI: reverberating Disk Models for NGC 5548
D. Starkey, Keith Horne, M. M. Fausnaugh +90
We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investigate the temperature structure of its accretion disk. The 19 overlapping continu…
A Multi-Wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies
M. L. Trippe, D. M. Crenshaw, R. P. Deo +4
We focus on determining the underlying physical cause of a Seyfert galaxy's appearance as type a 1.8 or 1.9. Are these "intermediate" Seyfert types typical Seyfert 1 nuclei with re…
Long-Term Variability in the Optical Spectrum of the Seyfert Galaxy NGC 2992
M. L. Trippe, D. M. Crenshaw, R. Deo +1
New spectra of NGC 2992 from the Cerro Tololo Inter-American Observatory show that this nearby AGN has changed its type classification to a Seyfert 2 in 2006. It was originally cla…
Probing the Ionizing Continuum of Narrow-Line Seyfert 1 Galaxies. I.Observational Results
M. Dietrich, D. M. Crenshaw, S. B. Kraemer
We present optical spectra and emission-line ratios of 12 Narrow-Line Seyfert 1 (NLS1) galaxies that we observed to study the ionizing EUV continuum. A common feature in the EUV co…
A Spectroscopic and Photometric Study of Short-Timescale Variability in NGC5548
M. Dietrich, C. F. Bender, D. J. Bergmann +19
Results of a ground-based optical monitoring campaign on NGC5548 in June 1998 are presented. The broad-band fluxes (U,B,V), and the spectrophotometric optical continuum flux F_lamb…
Kinematics and morphology of the Narrow-Line Region in the Seyfert galaxy NGC1386
J. Rossa, M. Dietrich, S. J. Wagner
We present a high spatial and spectral resolution 2-D echelle spectrogram of the Narrow-Line Region in the Seyfert 2 galaxy NGC1386. This Seyfert galaxy was observed with CASPEC in…