Size and disk-like shape of the broad-line region of ESO399-IG20

Abstract

We present photometric reverberation mapping of the narrow-line Seyfert 1 galaxy ESO399-IG20 performed with the robotic 15 cm telescope VYSOS-6 at the Cerro Armazones Observatory. Through the combination of broad- and narrow-band filters we determine the size of the broad-line emitting region (BLR) by measuring the time delay between the variability of the continuum and the H_alpha emission line. We use the flux variation gradient method to separate the host galaxy contribution from that of the active galactic nucleus (AGN), and to calculate the 5100A luminosity L_AGN of the AGN. Both measurements permit us to derive the position of ESO399-IG20 in the BLR size -- AGN luminosity R_BLR-L_AGN^0.5 diagram. We infer the basic geometry of the BLR through modelling of the light curves. The pronounced sharp variability patterns in both the continuum and the emission line light curves allow us to reject a spherical BLR geometry. The light curves are best fitted by a disk-like BLR seen nearly face-on with an inclination angle of 6+/-3 degrees and with an extension from 16 to 20 light days.

arXiv comment9 pages, 13 figures, Published in Astronomy and Astrophysics

References in corpus (27)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei: I. Comparing the Photoionization and Reverberation Techniques
• On Uncertainties in Cross-Correlation Lags and the Reality of Wavelength-Dependent Continuum Lags in Active Galactic Nuclei
• The Radius-Luminosity Relationship for Active Galactic Nuclei: The Effect of Host-Galaxy Starlight on Luminosity Measurements II. The Full Sample of Reverberation-Mapped AGNs
• Reverberation Mapping of High-Luminosity Quasars: First Results
• Keplerian Motion of Broad-Line Region Gas as Evidence for Supermassive Black Holes in Active Galactic Nuclei
• Reverberation Mapping Measurements of Black Hole Masses in Six Local Seyfert Galaxies
• An Alternative Approach To Measuring Reverberation Lags in Active Galactic Nuclei
• Is Quasar Optical Variability a Damped Random Walk?
• UBVRI Photometric Standard Stars Around the Celestial Equator: Updates and Additions
• Reverberation Mapping Results for Five Seyfert 1 Galaxies
• The Lick AGN Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines
• Comparing and calibrating black hole mass estimators for distant active galactic nuclei
• Optical atmospheric extinction over Cerro Paranal
• Reverberation Mapping and the Physics of Active Galactic Nuclei
• Photometric AGN reverberation mapping - an efficient tool for BLR sizes, black hole masses and host-subtracted AGN luminosities
• Long-Term Optical Continuum Color Variability of Nearby Active Galactic Nuclei
• Measurement of the Broad Line Region Size in Two Bright Quasars
• Broad Band Photometric Reverberation Mapping of NGC 4395
• Photometric reverberation mapping of 3C120
• Photometric Reverberation Mapping of the Broad Emission Line Region in Quasars
• BLR kinematics and Black Hole Mass in Markarian 6
• Probing the Ionizing Continuum of Narrow-Line Seyfert 1 Galaxies. I.Observational Results
• Measurement of The Broad Line Region Size in a Luminous MACHO Quasar

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