Formation of the Large Nearby Galaxies

Abstract

Observations of the nearby large galaxies that can be examined in particularly close detail suggest that many have small stellar luminosity fractions in bulges and haloes. Simulations of galaxy formation tend to produce considerably larger fractions of the star particles in model bulges, stellar haloes, and more generally in orbits seriously different from circular. The situation might be improved by a prescription for non-Gaussian initial conditions on the scale of galaxies.

additions and revisions inspired by comments received. v3 has more additions and revisions

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• 3D hydrodynamic simulations for the formation of the Local Group satellite planes
• The High Fraction of Thin Disk Galaxies Continues to Challenge ΛCDM Cosmology
• Barred spiral galaxies in modified gravity theories
• NGC 5746: formation history of a massive disc-dominated galaxy
• The phantom dark matter halos of the Local Volume in the context of modified Newtonian dynamics
• Galaxy Flybys: Evolution of the Bulge, Disk, and Spiral Arms
• Hydrodynamical structure formation in Milgromian cosmology
• Exploring the effects of primordial non-Gaussianity at galactic scales
• Milky Way-like galaxies: stellar population properties of dynamically defined disks, bulges and stellar halos
• Discord in Concordance Cosmology and Anomalously Massive Early Galaxies
• Growth of disc-like pseudo-bulges in SDSS DR7 since z = 0.1
• 2D Surface Brightness Modelling of Large 2MASS Galaxies I: Photometry and Structural Parameters
• Universal bimodality in kinematic morphology and the divergent pathways to galaxy quenching
• Simulations of the accreted stellar halos of low-mass field galaxies
• The assembly of the most rotationally supported disc galaxies in the TNG100 simulations
• High and low Sérsic index bulges in Milky Way- and M31-like galaxies: origin and connection to the bar with TNG50