nLab galaxy

Definition

A galaxy is a collection of stars, compact stars, interstellar gas and dust which are bound together by gravity.

Properties

• galaxy rotation curve

• Tully-Fisher relation

Examples

• Milky Way

• Messier 87

Related concepts

• observable universe

• dark matter

• structure formation

References

General

See also

• Wikipedia, Galaxy

• Wikipedia, Galaxy clusters

Structure formation and computer simulation

Computer simulation of galaxy structure formation:

• Julio Navarro, Simulations of Galaxy Formation: the State of the Art (pdf)

• Mark Vogelsberger, Federico Marinacci, Paul Torrey, Ewald Puchwein, Cosmological Simulations of Galaxy Formation, Nature Reviews Physics volume 2, pages 42–66 (2020) (arXiv:1909.07976, doi:10.1038/s42254-019-0127-2)

• FIRE: Feedback In Realistic Environments Increasing the predictive power of galaxy formation simulations

  • visualization

• Volonteri, Simulation of the formation of a galaxy similar to our Milky Way (video)

• Shea Garrison-Kimmel, Next-generation Galaxy Formation Simulations with FIRE, 2018 (video recording)

• Fitts et al. FIRE in the Field: Simulating the Threshold of Galaxy Formation, Mon.Not.Roy.Astron.Soc.471:3547-3562, 2017 (arXiv:1611.02281)

• Hopkins et al. FIRE-2 Simulations: Physics versus Numerics in Galaxy Formation. Monthly Notices of the Royal Astronomical Society, Volume 480, Issue 1, 11 October 2018, Pages 800–863 (arXiv:1702.06148, doi:10.1093/mnras/sty1690)

• El-Badry et al. Gas Kinematics in FIRE Simulated Galaxies Compared to Spatially Unresolved HI Observations, Monthly Notices of the Royal Astronomical Society, Volume 477, Issue 2, 21 June 2018, Pages 1536–1548 (arXiv:1801.03933, doi:10.1093/mnras/sty730)

galactic rotation curves qualitatively reproduced in Hopkins 17, Figure 4, Figure 5

baryonic Tully-Fisher relation qualitatively reproduced in El-Badry 18, Figure 4

• Justin Read et al. EDGE I: the mass-metallicity relation as a critical test of galaxy formation physics (arXiv:1904.02723)

Simulation specifically of Milky Way-like galaxies:

• VINTERGATAN simulation

On high redshift galaxies discovered at the James Webb Space Telescope:

• Michael Boylan-Kolchin, Stress Testing ΛCDM with High-redshift Galaxy Candidates, (arXiv:2208.01611)

• B. E. Robertson et al. Discovery and properties of the earliest galaxies with confirmed distances. (arXiv:2212.0448)