NOAO >   Observing Info >   Approved Programs >   2014A-0100

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Proposal Information for 2014A-0100


PI: Jong-Hak Woo, Carnegie Institution of Washington (Headquartes), woo@obs.carnegiescience.edu
Address: Carnegie Observatories, Headquarters, 813 Santa Barbara Street, Pasadena, CA, 91101-1292, USA

CoI: Kayhan Gultekin, University of Michigan
CoI: Daeseong Park, Seoul National University
CoI: Yosep Yoon, Seoul National University

Title: Investigating the M-sigma relation using rotation-corrected velocity dispersions

Abstract: The correlation between black hole (BH) mass and stellar velocity dispersion (SVD) indicates a strong connection between BH growth and galaxy evolution. Although dynamical BH mass measurements have been significantly improved over the last several years, not much attention has been paid to SVD. Currently, there are two limitations in the SVD measurements, which arguably lead to systematic uncertainties in the M-sigma relation, particularly in the low-mass regime. First, spatially resolved stellar kinematics are not available for many late-type galaxies in the M-sigma sample. Second, the rotation and inclination effect of the stellar disk has not been carefully accounted for. To overcome these limitation, we propose to perform long-slit spectroscopy for a sample of 8 late-type galaxies, for which the spatially resolved measurements are not currenlty available. We will investigate the rotation and inclination effect of the stellar disk by comparing rotation-added and rotation-corrected SVDs. Combining them with early-type galaxies in the M-sigma sample, we will investigate the difference beween late-type vs. early-type, and classical vs. pseudo bulges in the M-sigma plane, to improve our understanding of the local M-sigma relation.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2014A-0100

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