No Evidence for [O III] Variability in Mrk 142
Astrophysics of Galaxies
2016-03-09 v1
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.
Cite
@article{arxiv.1602.08641,
title = {No Evidence for [O III] Variability in Mrk 142},
author = {A. J. Barth and M. C. Bentz},
journal= {arXiv preprint arXiv:1602.08641},
year = {2016}
}
Comments
Response to Zhang & Feng 2016, MNRAS Letters, 457, L64 (arXiv:1512.07673). Accepted for publication in MNRAS Letters. 5 pages, 2 figures