Spiral structure and star formation. I. Formation mechanisms and mean free paths
Journal Article
·
· Astrophys. J.; (United States)
We present a model of the interstellar medium (ISM) in spiral galaxies. The ISM is simulated by a system of particles, representing gas clouds. It is a probabilistic N-body system in which ''cloud'' particles orbit ballistically, undergo dissipative collisions with other clouds, and experience velocity-boosting interactions with expanding supernova remnants (SNRs). Associations of protostars may form in clouds following collisions or SNR interactions (thus allowing sequential star formation); these associations take finite times before becoming active and undergoing their own SN events.
- Research Organization:
- Department of Applied Mathematics and Computer Science, University of Virginia
- OSTI ID:
- 6663048
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 277:2; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLLISIONS
COSMIC GASES
CROSS SECTIONS
DISTRIBUTION
FLUIDS
GALACTIC EVOLUTION
GALAXIES
GASES
GRAVITATIONAL FIELDS
INTERGALACTIC SPACE
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MEAN FREE PATH
MILKY WAY
MORPHOLOGY
PROTOSTARS
SHOCK WAVES
SPACE
SPATIAL DISTRIBUTION
STAR ACCRETION
STAR EVOLUTION
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLLISIONS
COSMIC GASES
CROSS SECTIONS
DISTRIBUTION
FLUIDS
GALACTIC EVOLUTION
GALAXIES
GASES
GRAVITATIONAL FIELDS
INTERGALACTIC SPACE
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MEAN FREE PATH
MILKY WAY
MORPHOLOGY
PROTOSTARS
SHOCK WAVES
SPACE
SPATIAL DISTRIBUTION
STAR ACCRETION
STAR EVOLUTION