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Can I read The Slope of the Black Hole Mass versus Velocity Dispersion Correlation on EtoBox?
The Slope of the Black Hole Mass versus Velocity Dispersion Correlation by Scott Tremaine; Karl Gebhardt; Ralf Bender; Gary Bower; Alan Dressler; S. M. Faber; Alexei V. Filippenko; Richard Green; Carl Grillmair; Luis C. Ho; John Kormendy; Tod R. Lauer; John Magorrian; Jason Pinkney; Douglas Richstone is a Physics and Astronomy article available to read on EtoBox.
What is The Slope of the Black Hole Mass versus Velocity Dispersion Correlation about?
Observations of nearby galaxies reveal a strong correlation between the mass of the central dark object M BH and the velocity dispersion of the host galaxy, of the form logðM BH =M Þ 1⁄4 þ logð= 0 Þ; however, published estimates of the slope span a wide range (3.75-5.3). Merritt & Ferrarese have argued that low slopes (d4) arise because of neglect of random measurement errors in the dispersions and an incorrect choice for the dispersion of the Milky Way Galaxy. We show that these explanations and several others account for at most a small part of the slope range. Instead, the range of slopes arises mostly because of systematic differences in the velocity dispersions used by different groups for the same galaxies. The origin of these differences remains unclear, but we suggest that one significant component of the difference results from Ferrarese & Merritt's extrapolation of central velocity dispersions to r e =8 (r e is the effective radius) using an empirical formula. Another component may arise from dispersion-dependent systematic errors in the measurements. A new determination of the slope using 31 galaxies yields 1⁄4 4:02 AE 0:32, 1⁄4 8:13 AE 0:06 for 0 1⁄4 200 km s À1 . The M
Who reads The Slope of the Black Hole Mass versus Velocity Dispersion Correlation?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- Scott Tremaine; Karl Gebhardt; Ralf Bender; Gary Bower; Alan Dressler; S. M. Faber; Alexei V. Filippenko; Richard Green; Carl Grillmair; Luis C. Ho; John Kormendy; Tod R. Lauer; John Magorrian; Jason Pinkney; Douglas Richstone
- Publisher
- American Astronomical Society
- Published
- 2002
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)