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On the Physical Mechanism Underlying PC1 and Baldwin Effect in Quasars

Published online by Cambridge University Press:  03 June 2010

Xiao-Bo Dong ,
Ting-Gui Wang ,
Jian-Guo Wang ,
Xiaohui Fan ,
Huiyuan Wang ,
Hongyan Zhou  and
Weimin Yuan
Xiao-Bo Dong
Affiliation:
Center for Astrophysics, University of Science and Technology of China Email: xbdong@ustc.edu.cn
Ting-Gui Wang
Affiliation:
Center for Astrophysics, University of Science and Technology of China Email: xbdong@ustc.edu.cn
Jian-Guo Wang
Affiliation:
Center for Astrophysics, University of Science and Technology of China Email: xbdong@ustc.edu.cn Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
Xiaohui Fan
Affiliation:
Steward Observatory, The University of Arizona, Tucson, AZ 85721, USA
Huiyuan Wang
Affiliation:
Center for Astrophysics, University of Science and Technology of China Email: xbdong@ustc.edu.cn
Hongyan Zhou
Affiliation:
Center for Astrophysics, University of Science and Technology of China Email: xbdong@ustc.edu.cn
Weimin Yuan
Affiliation:
Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
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Recent work (Baskin & Laor 2004; Dong et al. 2009a, b) suggests that the Eddington ratio (l ≡ L/LEdd) is the origin of all the significant first-order object-to-object variations of quasar spectral properties from the zeroth-order similarity of AGN spectra; specifically, this includes the PC1 of Boroson & Green (1992), the classic or inverse Baldwin effect (Baldwin 1977), and even blueshifting (i.e., blue asymmetry) of high-ionization emission lines (Dong et al. 2009c).

Keywords

galaxies: activequasars: emission linesquasars: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S267: Co-Evolution of Central Black Holes and Galaxies , August 2009 , pp. 396
Copyright
Copyright © International Astronomical Union 2010

References

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Baskin, A. & Laor, A. 2004, MNRAS, 350, L31Google Scholar
Boroson, T. A & Green, R. F. 1992, ApJS, 80, 109Google Scholar
Dong, X.-B., Wang, T., Wang, J., Fan, X., Wang, H., Zhou, H., & Yuan, W. 2009a, ApJ, 703, L1Google Scholar
Dong, X., et al. 2009b, submitted to ApJ [arXiv: 0903.5020]Google Scholar
Dong, X., et al. 2009c, in The Origin and Physical Mechanism of the Ensemble Baldwin Effect, ed. Wang, W., Yang, Z., & Chen, Z. (San Francisco: ASP), p. 83Google Scholar
Korista, K. T. 1999 in Quasars and Cosmology, (San Francisco: ASP), p. 165Google Scholar