Formation and evolution of dwarf galaxies and Lyman-alpha clouds - Two-component dark matter universe. I

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/164894· OSTI ID:6541733

Ikeuchi, S; Norman, C A

The formation and evolution of subgalactic objects formed prior to pancaking of hot particles are studied along with the formation and evolution of associated Lyman-alpha absorbing clouds and of dwarf galaxies in which cold dark matter dominates. The scenario for the formation of astronomical objects of various scales and their evolution based upon a two-component dark matter-dominated universe is presented, and the gravitational equilibrium of a baryon cloud embedded in a cold dark matter system is examined. The evolution of collapsed clouds, especially star formation bursts and the resulting gas expulsion, is explored. Various correlation parameters for dwarf galaxies are derived, and ionization and heating of the IGM by energy input from these subgalactic objects are analyzed. Predicted properties of Lyman-alpha clouds are derived from these models. 47 references.

• Research Organization: Space Telescope Science Institute, Baltimore, MD
• OSTI ID: 6541733
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 312; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
COSMIC GASES
ELEMENTARY PARTICLES
FLUIDS
GALACTIC EVOLUTION
GASES
LYMAN LINES
NONLUMINOUS MATTER
STAR EVOLUTION
UNIVERSE