5 papers
Extreme BAL Quasars from the Sloan Digital Sky Survey
Patrick B. Hall, J. E. Gunn, G. R. Knapp +16
The Sloan Digital Sky Survey has discovered a population of broad absorption line quasars with various extreme properties. Many show absorption from metastable states of FeII with…
The black hole mass vs bulge mass relationship in spiral galaxies
A. Marconi, D. Axon, J. Atkinson +15
We describe an on-going HST program aimed at determining the relationship between the nuclear black hole mass and bulge mass in spiral galaxies. We have selected a volume limited s…
Radio Continuum and Emission Line Morphologies of Southern Seyfert Galaxies
Z. Tsvetanov, R. Morganti, R. A. E. Fosbury +2
We have collected emission line ([Oiii] 5007 and Halpha+[Nii]) and radio continuum images for a volume limited (cz <= 3600 km/s) sample of southern Seyfert galaxies. The optical da…
HST Detections of Massive Black Holes in the Centers of Galaxies
H. C. Ford, Z. I. Tsvetanov, L. Ferrarese +1
After correcting spherical aberration in the Hubble Space Telescope in 1993, the central masses of galaxies can be measured with a resolution 5 to 10 times better than can be achie…
HUT Observations of the Lyman Limit in AGN: Implications for Unified Models
G. Kriss, J. Krolik, J. Grimes +4
We observed a total of 13 low-redshift AGN with the Hopkins Ultraviolet Telescope (HUT) during the course of the Astro-1 and Astro-2 missions. Of these, 4 show intrinsic Lyman limi…