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arXiv · 0904.4031

Extending the Eigenvector 1 Space to the Optical Variability of Quasars

Yufeng Mao·Jing Wang·Jianyan Wei
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Abstract

We introduce a new physical parameter, the optical variability amplitude, to the well-established Eigenvector 1 space of quasars and test a sample of long-term B-band light curves of 42 PG quasars monitored by Giveon et al. (1999). We find that the optical variability amplitude strongly correlates with the intensity ratio of Fe II to H$β$, H$β$ width and peak luminosity at 5007$\rmÅ$. We briefly discuss the physical meaning of our findings and suggest that the Eddington ratio may be a key factor in determining a quasar's variability.

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Yufeng Mao, Jing Wang, Jianyan Wei. 2009-04-28. Extending the Eigenvector 1 Space to the Optical Variability of Quasars. https://doi.org/10.1088/1674-4527%2F9%2F5%2F004

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