R
Ralf Bender
Researcher at Max Planck Society
Publications - 542
Citations - 51741
Ralf Bender is an academic researcher from Max Planck Society. The author has contributed to research in topics: Galaxy & Redshift. The author has an hindex of 92, co-authored 423 publications receiving 49115 citations. Previous affiliations of Ralf Bender include Institut d'Astrophysique de Paris & ASTRON.
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Journal ArticleDOI
The Demography of massive dark objects in galaxy centers
J. Magorrian,Scott Tremaine,Scott Tremaine,Douglas O. Richstone,Ralf Bender,G. A. Bower,Alan Dressler,Sandra M. Faber,Karl Gebhardt,Richard E. Green,Carl J. Grillmair,John Kormendy,Tod R. Lauer +12 more
TL;DR: In this article, the authors constructed dynamical models for a sample of 36 nearby galaxies with Hubble Space Telescope (HST) photometry and ground-based kinematics, assuming that each galaxy is axisymmetric, with a two-integral distribution function, arbitrary inclination angle, a position-independent stellar mass-to-light ratio, and a central massive dark object of arbitrary mass M•.
Journal ArticleDOI
A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
Karl Gebhardt,Ralf Bender,Gary Bower,Alan Dressler,Sandra M. Faber,Alexei V. Filippenko,Richard F. Green,Carl J. Grillmair,Luis C. Ho,John Kormendy,Tod R. Lauer,John Magorrian,Jason Pinkney,Douglas O. Richstone,Scott Tremaine +14 more
TL;DR: In this paper, a correlation between the mass Mbh of a galaxy's central black hole and the luminosity-weighted line-of-sight velocity dispersion σe within the half-light radius is described.
Journal ArticleDOI
The Demography of Massive Dark Objects in Galaxy Centres
John Magorrian,Scott Tremaine,Douglas O. Richstone,Ralf Bender,Gary Bower,Alan Dressler,S. M. Faber,Karl Gebhardt,Richard E. Green,Carl J. Grillmair,John Kormendy,Tod R. Lauer +11 more
TL;DR: In this article, the authors constructed dynamical models for a sample of 36 nearby galaxies with Hubble Space Telescope photometry and ground-based kinematics, assuming that each galaxy is axisymmetric, with a two-integral distribution function, arbitrary inclination angle, a position-independent stellar mass-to-light ratio Upsilon, and a central massive dark object of arbitrary mass M_bh.
Journal ArticleDOI
The slope of the black hole mass versus velocity dispersion correlation
Scott Tremaine,Karl Gebhardt,Ralf Bender,Gary Bower,Alan Dressler,Sandra M. Faber,Alexei V. Filippenko,Richard F. Green,Carl J. Grillmair,Luis C. Ho,John Kormendy,Tod R. Lauer,John Magorrian,Jason Pinkney,Douglas O. Richstone +14 more
TL;DR: In this paper, it was shown that the range of slopes arises mostly due of sys- tematic differences in the velocity dispersions used by different groups for the same galaxies, and that one significant component of the difference results from Ferrarese & Merritt's extrapolation of central velocity dispersion to re= 8( re is the effective radius) using an empirical formula.
Journal ArticleDOI
The Epochs of Early-Type Galaxy Formation as a Function of Environment
TL;DR: In this article, the authors derived ages, total metallicities, and element ratios of 124 early-type galaxies in high and low-density environments, and analyzed the data by comparison with mock galaxy samples created through Monte Carlo simulations taking the typical average observational errors into account.