Simulations of the supernova-dominated interstellar medium in disk galaxies

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169606· OSTI ID:6001092

Cioffi, D F; Shull, J M ^[1]

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1. NASA, Goddard Space Flight Center, Greenbelt, MD (USA) Colorado Univ., Boulder (USA)

A three-dimensional simulation of the evolution of an SNR-dominated ISM from an initially homogeneous, uniform substrate is presented. Systems with only bremsstrahlung cooling are compared with those cooled by radiation from metals. This distinction translates into a size difference in the resulting SNRs, and thus in the ability of isolated SNRs to affect the evolution of the galactic ecosystem. At a given SN rate, correlating the SNe decreases the global evolution of the galaxy if the SNRs individually can affect the system. It is shown that, when the density of the ISM varies widely, the N(R) test can give the reverse of standard expectations. It is shown that strong SNRs can impede interstellar tunnel production because of their ability to transport material and fill a previously evacuated volume, and that cloud size affects the final picture of the system. 113 refs.

• OSTI ID: 6001092
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 367; 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
BREMSSTRAHLUNG
COMPUTERIZED SIMULATION
COOLING
COSMIC RADIO SOURCES
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTS
GALACTIC EVOLUTION
GALAXIES
INTERSTELLAR SPACE
MASS DISTRIBUTION
MASS TRANSFER
METALS
MILKY WAY
PHYSICAL PROPERTIES
RADIATIONS
SIMULATION
SPACE
SPATIAL DISTRIBUTION
SUPERNOVA REMNANTS
THERMODYNAMIC PROPERTIES