Bulgeless Giant Galaxies Challenge Our Picture Of Galaxy Formation By Hierarchical Clustering

@article{Kormendy2010BulgelessGG,
  title={Bulgeless Giant Galaxies Challenge Our Picture Of Galaxy Formation By Hierarchical Clustering},
  author={John Kormendy and Niv Drory and Ralf Bender and Mark Edward Cornell},
  journal={The Astrophysical Journal},
  year={2010},
  volume={723},
  pages={54-80}
}
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 Spectrograph (resolution R ? ?/FWHM 15, 000) to measure stellar velocity dispersions in the nuclear star clusters and (pseudo)bulges of the pure-disk galaxies M 33, M 101, NGC?3338, NGC?3810, NGC?6503, and NGC?6946. The dispersions range from 20 ? 1?km?s?1 in the… Expand
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References

SHOWING 1-10 OF 284 REFERENCES
Galaxy morphology, kinematics and clustering in a hydrodynamic simulation of a Λ cold dark matter universe
We explore galaxy properties and their link with environment and clustering using a population of ∼1000 galaxies formed in a high-resolution hydrodynamic simulation of the A cold dark matterExpand
Bulgeless dwarf galaxies and dark matter cores from supernova-driven outflows
TLDR
Hydrodynamical simulations in a framework assuming the presence of CDM and a cosmological constant are reported in which the inhomogeneous interstellar medium is resolved and the analogues of dwarf galaxies—bulgeless and with shallow central dark-matter profiles—arise naturally in these simulations. Expand
The host galaxies of low-mass black holes
Using Hubble Space Telescope observations of 147 host galaxies of low-mass black holes (BHs), we systematically study the structures and scaling relations of these active galaxies. Our sample isExpand
ON THE SURVIVAL AND ABUNDANCE OF DISK-DOMINATED GALAXIES
We study the formation of disk-dominated galaxies in a Λ cold dark matter (ΛCDM) universe. Their existence is considered to be a challenge for the ΛCDM cosmology, because galaxy mergers isotropizeExpand
Pseudobulges in the Disk Galaxies NGC 7690 and NGC 4593
We present Ks-band surface photometry of NGC 7690 (Hubble type Sab) and NGC 4593 (SBb). We find that, in both galaxies, a major part of the bulge is as flat as the disk and has approximately the sameExpand
Halos of Spiral Galaxies. I. The Tip of the Red Giant Branch as a Distance Indicator
We have imaged the halo populations of a sample of nearby spiral galaxies using the Wide Field Planetary Camera 2 on board the Hubble Space Telescope with the aim of studying the stellar populationExpand
A STELLAR DYNAMICAL MEASUREMENT OF THE BLACK HOLE MASS IN THE MASER GALAXY NGC 4258
We determine the mass of the black hole at the center of the spiral galaxy NGC 4258 by constructing axisymmetric dynamical models of the galaxy. These models are constrained by high spatialExpand
Disk Galaxy Formation in a Λ Cold Dark Matter Universe
We describe hydrodynamic simulations of galaxy formation in a Λ cold dark matter cosmology, performed using a subresolution model for star formation and feedback in a multiphase interstellar mediumExpand
Galaxy Merger Statistics and Inferred Bulge-to-Disk Ratios in Cosmological SPH Simulations
We construct merger trees for galaxies identified in a cosmological hydrodynamic simulation and use them to characterize predicted merger rates as a function of redshift, galaxy mass, and merger massExpand
Galaxy bimodality due to cold flows and shock heating
We address the origin of the robust bimodality observed in galaxy properties about a characteristic stellar mass ∼3 x 10 10 M ⊙ . Less massive galaxies tend to be ungrouped blue star forming discs,Expand
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1
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3
4
5
...