The Black Hole Mass of NGC 4151. II. Stellar Dynamical Measurement from Near-Infrared Integral Field Spectroscopy

摘要: We present a revised measurement of the mass central black hole (Mbh) in Seyfert 1 galaxy NGC 4151. The new stellar dynamical is derived by applying an axisymmetric orbit-superposition code to near-infrared integral field data obtained using adaptive optics with Gemini NIFS spectrograph. When our models attempt fit both kinematics and additional low spatial resolution kinematics, results depend sensitively on how chi-squared computed--probably consequence complex bar that manifest immediately outside nuclear region. most robust are when only high kinematic constraints region included fit. Our best estimates for BH H-band mass-to-light ratio Mbh~(3.76+/-1.15)E7 Msun (1-sigma error) M/L(H-band)~0.34+/-0.03 Msun/Lsun (3-sigma error), respectively (the quoted errors reflect model uncertainties). consistent from reverberation mapping (3.57[+0.45/-0.37]E7 Msun) gas (3.0[+0.75/-2.2]E7 Msun; 1-sigma errors), best-fit photometric estimate M/L(H-band)=0.4+/-0.2 Msun/Lsun. give bulge velocity dispersion sigma_c=116+/-3 km/s, bringing this object slightly closer M-sigma relation quiescent galaxies. Although 4151 one few galaxies which it possible obtain direct measurement--and thus, independent calibration scale--the makes less than ideally suited purpose.