Detailed Structural Decomposition of Galaxy Images
We present a two-dimensional fitting algorithm (GALFIT) designed to extract structural components from galaxy images, with emphasis on closely modeling light profiles of spatially well-resolved,…
The Slope of the Black Hole Mass versus Velocity Dispersion Correlation
- S. TremaineK. Gebhardt D. Richstone
- 26 March 2002
Physics
Observations of nearby galaxies reveal a strong correlation between the mass of the central dark object MBH and the velocity dispersion σ of the host galaxy, of the form log(MBH/M☉) = α + β…
Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
- J. KormendyL. Ho
- 29 April 2013
Physics
Supermassive black holes (BHs) have been found in 85 galaxies by dynamical modeling of spatially resolved kinematics. The Hubble Space Telescope revolutionized BH research by advancing the subject…
DETAILED DECOMPOSITION OF GALAXY IMAGES. II. BEYOND AXISYMMETRIC MODELS
We present a two-dimensional (2D) fitting algorithm (Galfit, ver. 3) with new capabilities to study the structural components of galaxies and other astronomical objects in digital images. Our…
A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
- K. GebhardtR. Bender S. Tremaine
- 20 June 2000
Physics
We describe 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. The result is based on a…
A Search for “Dwarf'' Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies
- L. HoA. FilippenkoW. Sargent
- 11 April 1997
Physics
We have completed an optical spectroscopic survey of the nuclear regions (r ≲ 200 pc) of a large sample of nearby galaxies. Although the main objectives of the survey are to search for low-luminosity…
Nuclear Activity in Nearby Galaxies
- L. Ho
- 15 March 2008
Physics
A significant fraction of nearby galaxies show evidence of weak nuclear activity unrelated to normal stellar processes. Recent high-resolution, multiwavelength observations indicate that the bulk of…
The Masses of Nuclear Black Holes in Luminous Elliptical Galaxies and Implications for the Space Density of the Most Massive Black Holes
- T. LauerS. Faber J. Pinkney
- 29 June 2006
Physics
Black hole (BH) masses predicted from the M•-σ relationship conflict with predictions from the M•-L relationship for high-luminosity galaxies, such as brightest cluster galaxies (BCGs). The M•-L…
A Search for “Dwarf'' Seyfert Nuclei. V. Demographics of Nuclear Activity in Nearby Galaxies
- L. HoA. FilippenkoW. Sargent
- 11 April 1997
Physics
We use the sample of emission-line nuclei derived from a recently completed optical spectroscopic survey of nearby galaxies to quantify the incidence of local (z ≈ 0) nuclear activity. Particular…
Black Hole Mass Estimates from Reverberation Mapping and from Spatially Resolved Kinematics
- K. GebhardtK. Gebhardt S. Tremaine
- 10 July 2000
Physics
Black hole (BH) masses that have been measured by reverberation mapping in active galaxies fall significantly below the correlation between bulge luminosity and BH mass determined from spatially…
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