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STIS Longslit Spectroscopy of the Narrow-Line Region of NGC 4151. II. Physical Conditions along Position Angle 221 Degress
S. B. Kraemer, D. M. Crenshaw, J. B. Hutchings +4
We have examined the physical conditions in the narrow-line region of the well-studied Seyfert galaxy NGC 4151, using long-slit spectra obtained with the Hubble Space Telescope/Spa…
High Velocity Line Emission in the NLR of NGC 4151
J. B. Hutchings, D. M. Crenshaw, A. C. Danks +6
Narrow-band imaging of the nuclear region of NGC 4151 with the Hubble Space Telescope is presented. The filter bandpasses isolate line emission in various high velocity ranges in s…
Intrinsic Absorption Lines in the Seyfert 1 Galaxy NGC 5548: UV Echelle Spectra from the Space Telescope Imaging Spectrograph
D. Michael Crenshaw, Steven B. Kraemer
We present the first observations of a Seyfert galaxy with the echelle gratings on the Space Telescope Imaging Spectrograph (STIS), which provide high-resolution (R = 40,000) cover…
Physical Conditions in the Emission Line Gas in the Extremely Low Luminosity Seyfert Nucleus of NGC 4395
Steven B. Kraemer, Luis C. Ho, D. Michael Crenshaw +2
We have combined Hubble Space Telescope/Faint Object Spectrograph, ground-based, and Infrared Space Observatory spectra of the nucleus of NGC 4395, the least luminous and nearest k…