The Correlated Variations of Absorption Lines and Quasar Continuum
The Correlated Variations of Absorption Lines and Quasar Continuum
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吸收线与类星体连续体的相关变化
DOI:
10.3847/1538-4365/ab2464
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发表时间:
2019-06
期刊:
影响因子:
--
通讯作者:
Liu Chun-Qun
中科院分区:
文献类型:
--
作者:
Chen Zhi-Fu;Yi Shuang-Xi;Pang Ting-Ting;Yi Ting-Feng;Wang Zhi-Wen;Mo Xiao-Hua;Liu Chun-Qun
Using the quasar spectra from the Sloan Digital Sky Survey and with variable C iv absorption line systems, we measure the Si iv and N v absorption line systems. We obtain 50 variable Si iv absorption line systems and 39 variable N v absorption line systems. We find that the variations in most of the C iv, Si iv, and N v absorption lines are correlated with the changes in quasar continuum. In addition, a significant portion of the variable absorption lines are the consistent variations of multiple systems with large velocity separations. Therefore, the variations of the C iv, Si iv, and N v absorption lines could be mainly driven by the changes in quasar radiations, which cause changes in ionization states or column densities of absorbing gas. We also find that the variable C iv, Si iv, and N v absorption line systems can be divided into low-ionization systems and high-ionization systems. The former positively responds to the changes in the quasar’s brightness, and the later is the oppositive case.
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影响因子:
4.9
作者:
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通讯作者:
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影响因子:
4.8
作者:
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影响因子:
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DOI:
10.1086/180095
发表时间:
1967
期刊:
--
影响因子:
--
作者:
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通讯作者:
A. Pacholczyk;W. R. Penning;D. Ferguson