What determines the physical quantities of galaxies - A two-component gas model for protogalaxies with energy input from supernovae

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170209· OSTI ID:5317925

Ikeuchi, S; Norman, C A ^[1]

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1. National Astronomical Observatory, Mitaka (Japan) Space Telescope Science Institute, Baltimore, MD (USA) Johns Hopkins University (USA)

The critical physical properties of a protogalaxy whose interstellar medium is composed of cool clouds and hot ambient gas in pressure equilibrium are presented. The key physical processes are the microscopic atomic process which underlies the cooling function and the star formation process and its associated energy injection. Feedback processes are incorporated by allowing the energy injection from star formation triggered by cloud-cloud collisions to heat the protogalactic gas. The physical properties derived for these protogalactic systems could be useful in interpreting high-redshift objects that may be associated with galaxy formation. 12 refs.

• OSTI ID: 5317925
• Journal Information: Astrophysical Journal; (United States), Journal Name: Astrophysical Journal; (United States) Vol. 375; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COOLING
COSMIC GASES
ERUPTIVE VARIABLE STARS
FLUIDS
GALACTIC EVOLUTION
GASES
HIGH TEMPERATURE
INTERSTELLAR SPACE
MATHEMATICAL MODELS
MORPHOLOGY
PHYSICAL PROPERTIES
SPACE
STAR CLUSTERS
STAR EVOLUTION
STARS
SUPERNOVAE
VARIABLE STARS