Spectral optical monitoring of a double-peaked emission line AGN Arp 102B: Variability of spectral lines and continuum

We present results of long-term (1987-2010) optical spectral monitoring of the broad-line radio galaxy Arp 102B, a prototype of an active galactic nucleus with double-peaked broad emission lines that are commonly assumed to be emitted from an accretion disk. To explore the structure of the broad-lin...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2013-11, Vol.559, p.1-17
Main Authors: Shapovalova, A I, Popovic, L C, Burenkov, A N, Chavushyan, V H, Ilic, D, Kollatschny, W, Kovacevic, A, Bochkarev, N G, Valdes, J R, Torrealba, J
Format: Article
Language:English
Subjects:
Continuums
Emission
Emittance
Flux
Monitoring
Radio galaxies
Spectral emissivity
Spectral lines
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Summary:We present results of long-term (1987-2010) optical spectral monitoring of the broad-line radio galaxy Arp 102B, a prototype of an active galactic nucleus with double-peaked broad emission lines that are commonly assumed to be emitted from an accretion disk. To explore the structure of the broad-line region (BLR), we analyze the light-curves of the broad H alpha and H[Beta] lines and the continuum flux. We aim to estimate the dimensions of the broad-line emitting regions and the mass of the central black hole. The line and continuum lint-curves show several flare-like events. The fluxes in lines and in the continuum show no significant change during the monitored period. We found a weak correlation between the line and continuum flux variation that may indicate that the line variation is weakly connected with the variation of the central photoionization source.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201321781