75 citations · 228 across the 13 of their papers we have counts for
4 papers · 1 filter
Redshift Limits of BL Lacertae Objects from Optical Spectroscopy
J. D. Finke, J. C. Shields, M. Boettcher +1
Context: BL Lacertae objects have been the targets for numerous recent multiwavelength campaigns, continuum spectral variability studies, and theoretical spectral and variability m…
Conference Summary: The Central Engine of Active Galactic Nuclei
Hagai Netzer, Joseph C. Shields
The 2006 meeting in Xi'an on the Central Engine of Active Galactic Nuclei covered the enormous and continuously expanding area of AGN research, from theory to the most sophisticate…
The Stellar Populations of Seyfert 2 Nuclei
Marc Sarzi, Joe Shields, Rick Pogge +1
We present a preliminary analysis of the stellar populations in the central parsecs of a sample of 22 Seyfert 2 galaxies, based on a careful separation of nebular emission and stel…
Nuclear Star Clusters (Nuclei) in Spiral Galaxies and Connection to Supermassive Black Holes
Roeland P. van der Marel, Joern Rossa, Carl Jakob Walcher +4
HST observations have revealed that compact sources exist at the centers of many, maybe even most, galaxies across the Hubble sequence. These sources are called "nuclei" or also "n…