NOAO >   Observing Info >   Approved Programs >   2006B-0306

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Proposal Information for 2006B-0306


PI: Bradley M Peterson, The Ohio State University, peterson@astronomy.ohio-state.edu
Address: Astronomy Department, 140 West 18th Avenue, Columbus, OH 43210-1173, USA

CoI: Kalliopi Dasyra, MPE-Garching
CoI: Laura Ferrarese, Herzberg Institute of Astrophysics
CoI: Linda Tacconi, MPE Garching

Title: The Relationship Between Black Hole Mass and Stellar Bulge Velocity Dispersion in AGNs

Abstract: In addition to its obvious importance in understanding black hole demographics and galaxy dynamics, the \Msigma relationship, the correlation between central black hole mass and stellar bulge velocity dispersion, is of practical importance as a secondary method of estimating black hole masses. In the case of AGNs, recent work on the AGN \Msigma relationship suggests that reverberation mapping methods can underestimate black hole masses on account of inclination effects. Further investigation of this requires more velocity dispersion measurements of reverberation mapped AGNs, which has been frustrated by our inability to observe the Ca II triplet in QSOs with z > 0.06. However, with large telescopes with IFU and AO, it is possible to make velocity dispersion measurements using CO in the near IR. The goal of this program is to identify any systematic differences between CO and Ca II velocity dispersions and expand the same of AGNs for which the \Msigma relationship can be studied.


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NOAO >   Observing Info >   Approved Programs >   2006B-0306

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