Apparent [O iii] variability in the narrow line Seyfert I Mrk142
Apparent [O iii] variability in the narrow line Seyfert I Mrk142
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窄线 Seyfert I Mrk142 中明显的 [OIII] 变异性
DOI:
10.1093/mnrasl/slv204
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发表时间:
2015-12
影响因子:
4.8
通讯作者:
Feng Longlong
中科院分区:
文献类型:
--
作者:
Zhang Xueguang;Feng Longlong
In this letter, we checked spectral properties of the well-known narrow line Seyfert I Mrk142, in order to try to find effects of narrow line variability on BLR radius of Mrk142 which is an outlier in the R-L plane. Although, no improvement can be found on BLR radius, apparent narrow line variability can be confirmed in Mrk142. Using the public spectra collected from the Lick AGN Monitoring Project, the spectral scaling method based on assumption of constant \oiii line is firstly checked by examining broad and narrow emission line properties. We find that with the application of the spectral scaling method, there is a strong correlation between the \oiii line flux and the \oiii line width, but weaker correlations between the broad H$\alpha$ flux and the broad H$\beta$ flux, and between the broad H$\alpha$ flux and the continuum emission at 5100\AA. The results indicate that the assumption of constant \oiii line is not preferred, and caution should be exercised when applying the spectral scaling calibration method. And then, we can find a strong correlation between the \oiii line flux and the continuum emission at 5100\AA, which indicates apparent short-term variability of the \oiii line in Mrk142 over about two months.
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DOI:
10.1093/mnrasl/slu172
发表时间:
2015-02
影响因子:
--
作者:
XueGuang Zhang
通讯作者:
XueGuang Zhang
影响因子:
4.8
作者:
XueGuang Zhang
通讯作者:
XueGuang Zhang
影响因子:
4.9
作者:
BLANDFORD, RD;MCKEE, CF
通讯作者:
MCKEE, CF
DOI:
10.1086/117455
发表时间:
1995-06
期刊:
The Astronomical Journal
影响因子:
--
作者:
Wei Zheng;E. Pérez;S. Grandi;M. Penston
通讯作者:
Wei Zheng;E. Pérez;S. Grandi;M. Penston
DOI:
10.1088/0004-637x/804/2/138
发表时间:
2015-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Chen Hu;P. Du;K. Lu;Yan-Rong Li;Fang Wang;Jie Qiu;J. Bai;S. Kaspi;L. Ho;H. Netzer
通讯作者:
Chen Hu;P. Du;K. Lu;Yan-Rong Li;Fang Wang;Jie Qiu;J. Bai;S. Kaspi;L. Ho;H. Netzer