John Kormendy
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View article: The Black Hole Mass and Photometric Components of NGC 4826
The Black Hole Mass and Photometric Components of NGC 4826 Open
We present infrared photometry and Hubble Space Telescope imaging and spectroscopy of the Sab galaxy NGC 4826. Schwarzschild dynamical modeling is used to measure its central black hole mass M . Photometric decomposition is used to enable …
View article: The Black Hole Mass and Photometric Components of NGC 4826
The Black Hole Mass and Photometric Components of NGC 4826 Open
We present IR photometry and HST imaging and spectroscopy of Sab galaxy NGC 4826. Schwarzschild dynamical modeling is used to measure its central black hole mass $M$. Photometric decomposition is used to enable a comparison of $M$ to publi…
View article: Orbit-based dynamical models of the Sombrero Galaxy (NGC 4594)
Orbit-based dynamical models of the Sombrero Galaxy (NGC 4594) Open
We present axisymmetric, orbit-based models to study the central black hole (BH), stellar mass-to-light ratio (M/L), and dark matter (DM) halo of NGC4594 (M104, the Sombrero Galaxy). For stellar kinematics, we use published high-resolution…
View article: Metrics of research impact in astronomy: Predicting later impact from metrics measured 10-15 years after the PhD
Metrics of research impact in astronomy: Predicting later impact from metrics measured 10-15 years after the PhD Open
This paper calibrates how metrics derivable from the SAO/NASA Astrophysics Data System can be used to estimate the future impact of astronomy research careers and thereby to inform decisions on resource allocation such as job hires and ten…
View article: Metrics of research impact in astronomy: Predicting later impact from\n metrics measured 10-15 years after the PhD
Metrics of research impact in astronomy: Predicting later impact from\n metrics measured 10-15 years after the PhD Open
This paper calibrates how metrics derivable from the SAO/NASA Astrophysics\nData System can be used to estimate the future impact of astronomy research\ncareers and thereby to inform decisions on resource allocation such as job\nhires and …
View article: Tilted outer and inner structures in edge-on galaxies?
Tilted outer and inner structures in edge-on galaxies? Open
Tilted and warped discs inside tilted dark matter haloes are predicted from numerical and semi-analytical studies. In this paper, we use deep imaging to demonstrate the likely existence of tilted outer structures in real galaxies. We consi…
View article: The haloes and environments of nearby galaxies (HERON) – I. Imaging, sample characteristics, and envelope diameters
The haloes and environments of nearby galaxies (HERON) – I. Imaging, sample characteristics, and envelope diameters Open
We use a dedicated 0.7-m telescope to image the haloes of 119 galaxies in the Local Volume to μr ∼ 28–30 mag arcsec−2. The sample is primarily from the Two Micron All Sky Survey Large Galaxy Atlas (Jarrett et al. 2003) and extended to incl…
View article: Structural Analogs of the Milky Way Galaxy: Stellar Populations in the Boxy Bulges of NGC 4565 and NGC 5746<sup>∗</sup>
Structural Analogs of the Milky Way Galaxy: Stellar Populations in the Boxy Bulges of NGC 4565 and NGC 5746<sup>∗</sup> Open
We present NGC 4565 and NGC 5746 as structural analogs of our Milky Way. All three are giant, SBb–SBbc galaxies with two pseudobulges, i.e., a compact, disky, star-forming pseudobulge embedded in a vertically thick, “red and dead,” boxy ps…
View article: Annual Review of Astronomy and Astrophysics
Annual Review of Astronomy and Astrophysics Open
The cold interstellar medium (ISM) plays a central role in the galaxy evolution process. It is the reservoir that fuels galaxy growth via star formation, the repository of material formed by these stars, and a sensitive tracer of internal …
View article: Bulgeless Giant Galaxies Challenge Our Picture Of Galaxy Formation By Hierarchical Clustering
Bulgeless Giant Galaxies Challenge Our Picture Of Galaxy Formation By Hierarchical Clustering Open
To better understand the prevalence of bulgeless galaxies in the nearby field, we dissect giant Sc-Scd galaxies with Hubble Space Telescope (HST) photometry and Hobby-Eberly Telescope (HET) spectroscopy. We use the HET High Resolution Spec…
View article: Correlations Between Supermassive Black Holes, Velocity Dispersions, and Mass Deficits in Elliptical Galaxies with Cores
Correlations Between Supermassive Black Holes, Velocity Dispersions, and Mass Deficits in Elliptical Galaxies with Cores Open
High-dynamic-range surface photometry in a companion paper makes possible accurate measurement of the stellar light deficits L(def) and mass deficits M(def) associated with the cores of elliptical galaxies. We show that L(def) correlates w…
View article: Dissipation and Extra Light in Galactic Nuclei. III. "Core" Ellipticals and "Missing" Light
Dissipation and Extra Light in Galactic Nuclei. III. "Core" Ellipticals and "Missing" Light Open
We investigate how "extra" or "excess" central light in the surface brightness profiles of cusp or power-law elliptical galaxies relates to the profiles of ellipticals with cores. The envelopes of cusp ellipticals are established by violen…
View article: A Quintet Of Black Hole Mass Determinations
A Quintet Of Black Hole Mass Determinations Open
We report five new measurements of central black hole masses based on Space Telescope Imaging Spectrograph and Wide Field Planetary Camera 2 observations with the Hubble Space Telescope (HST) and on axisymmetric, three-integral, Schwarzsch…
View article: Structure and Formation of Elliptical and Spheroidal Galaxies
Structure and Formation of Elliptical and Spheroidal Galaxies Open
New surface photometry of all known elliptical galaxies in the Virgo cluster is combined with published data to derive composite profiles of brightness, ellipticity, position angle, isophote shape, and color over large radius ranges. These…
View article: Two Pseudobulges In The "Boxy Bulge" Galaxy NGC 5746
Two Pseudobulges In The "Boxy Bulge" Galaxy NGC 5746 Open
Galaxy formation and growth under the Lambda CDM paradigm is expected to proceed in a hierarchical, bottom-up fashion by which small galaxies grow into large galaxies; this mechanism leaves behind large "classical bulges" kinematically dis…
View article: The Bulge Radial Velocity Assay (BRAVA). II. Complete Sample And Data Release
The Bulge Radial Velocity Assay (BRAVA). II. Complete Sample And Data Release Open
We present new radial velocity measurements from the Bulge Radial Velocity Assay, a large-scale spectroscopic survey of M-type giants in the Galactic bulge/bar region. The sample of similar to 4500 new radial velocities, mostly in the regi…
View article: Detection of A Pseudobulge Hidden inside the "Box-Shaped Bulge" of NGC 4565
Detection of A Pseudobulge Hidden inside the "Box-Shaped Bulge" of NGC 4565 Open
Numerical simulations show that box-shaped bulges of edge-on galaxies are not bulges: they are bars seen side-on. Therefore, the two components that are seen in edge-on Sb galaxies such as NGC 4565 are a disk and a bar. But face-on SBb gal…
View article: The L Proportional To Sigma(8) Correlation for Elliptical Galaxies With Cores: Relation With Black Hole Mass
The L Proportional To Sigma(8) Correlation for Elliptical Galaxies With Cores: Relation With Black Hole Mass Open
We construct the Faber-Jackson correlation between velocity dispersion sigma and total galaxy luminosity L-V separately for elliptical galaxies with and without cores. The coreless ellipticals show the well-known, steep relationship d log …
View article: STRUCTURE AND FORMATION OF cD GALAXIES: NGC 6166 IN ABELL 2199
STRUCTURE AND FORMATION OF cD GALAXIES: NGC 6166 IN ABELL 2199 Open
Hobby-Eberly Telescope (HET) spectroscopy is used to measure the velocity dispersion profile of the nearest prototypical cD galaxy, NGC 6166 in the cluster Abell 2199. We also present composite surface photometry from many telescopes. We c…