207 citations · 557 across the 12 of their papers we have counts for
12 papers
A model for the Balmer pseudocontinuum in spectra of type 1 AGNs
Jelena Kovacevic, Luka C. Popovic, Wolfram Kollatschny
Here we present a new method for subtracting the Balmer pseudocontinuum in the UV part of type 1 AGN spectra. We calculate the intensity of the Balmer pseudocontinuum using the pro…
Spectral properties of a sample of type 1 AGNs: influence of star formation
Luka C. Popovic, Jelena Kovacevic, Milan S. Dimitrijevic
To find the spectral properties of AGNs in optical spectral band (around the Hb line) we constructed an Fe II template, that is covering Fe II emission from 4100 A to 5600 A. Using…
Spectral Optical Monitoring of the Narrow Line Seyfert 1 galaxy Ark 564
A. I. Shapovalova, L. C. Popovic, A. N. Burenkov +14
We present the results of a long-term (1999--2010) spectral optical monitoring campaign of the active galactic nucleus (AGN) Ark 564, which shows a strong Fe II line emission in th…
Spectral monitoring of AGNs: Preliminary results for Ark 564 and Arp 102B
A. I. Shapovalova, L. C. Popovic, D. Ilic +4
We present preliminary results of the long term spectral monitoring of two active galactic nuclei with different broad line shapes: Ark 564 and Arp 102B. Ark 564 is a bright nearby…
Photo-centric variability of quasars caused by variations in their inner structure: Consequences on Gaia measurements
Luka C. Popovic, Predrag Jovanovic, Marko Stalevski +4
We study the photocenter position variability due to variations in the quasar inner structure. We consider variability in the accretion disk emissivity and torus structure variabil…
Optical emission line properties of a sample of the broad-line AGNs: the Baldwin effect and eigenvector 1
Luka C. Popovic, Jelena Kovacevic
We divide a sample of 302 type-1 AGNs into two subsamples based on the narrow line [OIII]/Hbeta_{NLR} ratio, since we expect that there will be a stronger starburst (HII region) co…