885 citations · 2k across the 24 of their papers we have counts for
4 papers · 1 filter
Physical Conditions in the Seyfert Galaxy NGC 2992
Mark G. Allen, Michael A. Dopita, Zlatan I. Tsvetanov +1
This paper presents long slit spectral maps of the bi-cone shaped extended narrow line region (ENLR) in the Seyfert galaxy NGC 2992. We investigate the physical properties of the E…
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…
Morphology of the Nuclear Disk in M87
Z. I. Tsvetanov, M. G. Allen, H. C. Ford +1
A deep, fuly sampled diffraction limited (FWHM ~ 70 mas) narrow-band image of the central region in M87 was obtained with the Wide Filed and Planetary Camera 2 of the Hubble Space…
Ultraviolet Diagnostics for the Emission Line Gas in Active Galaxies
M. G. Allen, M. A. Dopita, Z. I. Tsvetanov
Optical diagnostic diagrams are frequently ambiguous as a test of the photoionization or fast shock models of the narrow line regions of active galaxies. Here, we present a set of…