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Long-term variability of the optical spectra of NGC 4151 - II. Evolution of the broad Hα and Hβ emission-line profiles
Aims. We present the results of a long-term monitoring (11 years, between 1996 and 2006) of Hα and Hβ line variations of the active galactic nucleus of NGC 4151. Methods. High quality spectra (S /N >Expand
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Detailed Analysis of Balmer Lines in a Sloan Digital Sky Survey Sample of 90 Broad Line Active Gal
In order to contribute to the general effort aiming at the improvement of our knowledge about the physical conditions within the broad-line regions (BLRs) of active galactic nuclei (AGNs), here weExpand
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Variability in spectropolarimetric properties of Sy 1.5 galaxy Mrk 6
Here we present an analysis of spectro-polarimetric observations of type 1.5 AGN Mrk 6, performed with 6m telescope SAO RAN in 12 epochs (2010 -- 2013). Additionally, the inter-stellar mater (ISM)Expand
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Spectral optical monitoring of 3C 390.3 in 1995-2007 II. Variability of the spectral line parameters
Context. We present a study of the variability of the broad emission-line parameters of 3C390.3, an active galaxy with the doublepeaked emission-line profiles. We give a detailed analysis of theExpand
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Oscillatory patterns in the light curves of five long-term monitored type 1 active galactic nuclei
A new combined data of 5 well known type 1 AGN are probed with a novel hybrid method in a search for oscillatory behavior. Additional analysis of artificial light curves obtained from the coupledExpand
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Probing the Physical Properties of the NGC 5548 Broad Line Region Using Balmer Lines
We investigated the physical characteristics of the broad line region (BLR) of NGC 5548 using the Boltzmann plot (BP) method, which we applied to the Balmer lines observed from 1996 to 2004. We foundExpand
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Time series analysis of active galactic nuclei: The case of Arp 102B, 3C 390.3, NGC 5548 and NGC 4051
We used the Z-transformed Discrete Correlation Function (ZDCF) and the Stochastic Process Estimation for AGN Reverberation (SPEAR) methods for the time series analysis of the continuum and the HandExpand
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The Σ D relation for planetary nebulae
We present an extended analysis of the relation between radio surface brightness and diameter – the so-called Σ − D relation for planetary nebulae (PNe). We revise our previous derivation of theExpand
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COMPARISON OF ELLIPTIC EQUATION – ABC/2 WITH COMPUTERASSISTED SEMIAUTHOMATIC METHODS FOR MEASURING THE VOLUME OF INTRACEREBRAL HEMORRHAGE
Hemorrhage volume, level of consciousness and ventricular extension and expansion of the hematoma are prognostic factors for clinical outcome of intracerebral hemorrhage (ICH). Volumetric measurementExpand
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The project of Serbian Virtual Observatory and data for stellar atmosphere modeling
Abstract We review recent developments in Serbian Virtual Observatory (SerVO) as well as developments surrounding Virtual Atomic and Molecular Data Center. Main components of SerVO are going to beExpand
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