[98.03] Evidence for Early Black-Hole Growth and Efficient Accretion.

AAS 201st Meeting, January, 2003
Session 98. AGNs, Black Holes, and Quasars
Oral, Wednesday, January 8, 2003, 10:00-11:30am, 616-617

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[98.03] Evidence for Early Black-Hole Growth and Efficient Accretion.

M. Vestergaard (Ohio State University)

New results on the distribution of central black-hole masses of distant, luminous quasars will be presented. Recent work (Vestergaard 2002, ApJ, 571, 733) presents a scaling relationship, calibrated to reverberation mapping masses of nearby quasars and AGNs, allowing the black-hole masses of more distant quasars to be estimated to within a factor of about 3. Black-hole masses for several quasar samples will be presented and implications for the growth and evolution of the black-hole will briefly be discussed.

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