No Evidence for [O III] Variability in Mrk 142
arXiv:1602.08641 · doi:10.1093/mnrasl/slw030
Abstract
Using archival data from the 2008 Lick AGN Monitoring Project, Zhang & Feng (2016) claimed to find evidence for flux variations in the narrow [O III] emission of the Seyfert 1 galaxy Mrk 142 over a two-month time span. If correct, this would imply a surprisingly compact size for the narrow-line region. We show that the claimed [O III] variations are merely the result of random errors in the overall flux calibration of the spectra. The data do not provide any support for the hypothesis that the [O III] flux was variable during the 2008 monitoring period.
arXiv commentResponse to Zhang & Feng 2016, MNRAS Letters, 457, L64 (arXiv:1512.07673). Accepted for publication in MNRAS Letters. 5 pages, 2 figures
References in corpus (17)
- 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
- The Low-Luminosity End of the Radius-Luminosity Relationship for Active Galactic Nuclei
- The Lick AGN Monitoring Project: Broad-Line Region Radii and Black Hole Masses from Reverberation Mapping of Hbeta
- Determining Inclinations of Active Galactic Nuclei Via Their Narrow-Line Region Kinematics - I. Observational Results
- Supermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign
- The Sloan Digital Sky Survey Reverberation Mapping Project: Technical Overview
- The Lick AGN Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves
- AGN Type-casting: Mrk 590 No Longer Fits the Role
- A Hubble Space Telescope Survey of Extended [OIII]5007A Emission in a Far-Infrared Selected Sample of Seyfert Galaxies: Results
- Size and properties of the narrow-line region in Seyfert-2 galaxies from spatially-resolved optical spectroscopy
- The Size of the Narrow-Line Emitting Region in the Seyfert 1 Galaxy NGC 5548 from Emission-Line Variability
- A Bayesian Method for the Intercalibration of Spectra in Reverberation Mapping
- Simulations of the OzDES AGN Reverberation Mapping Project
- Evidence for a Physically Compact Narrow-Line Region in the Seyfert 1 Galaxy NGC 5548
- The Lick AGN Monitoring Project: Photometric Light Curves and Optical Variability Characteristics
- Apparent \oiii variability in the narrow line Seyfert I Mrk142
Cited by in corpus (7)
- Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-Line Analysis for NGC 5548
- The intermediate line region in active galactic nuclei
- A New Approach to the Internal Calibration of Reverberation Mapping Spectra
- Active Galactic Nuclei with Ultra-fast Outflows Monitoring Project: The Broad-line Region of Mrk 79 as a Disk Wind
- Revealing the Broad Line Region of NGC 1275: The Relationship to Jet Power
- Improving the Flux Calibration in Reverberation Mapping by Spectral Fitting: Application to the Seyfert Galaxy MCG--6-30-15
- Data-driven dissection of emission-line regions in Seyfert galaxies