The time variation of the interstellar medium regulated by supernova remnants is studied by considering the interchange processes among six components: a warm gas, a general ambient gas, a hot gas, small clouds, molecular clouds and giant molecular clouds. Two interesting results are found. One is that the interstellar medium does not always attain a steady state such as a two- or three-phase model, but may exhibit a cyclic phase-change like a limit cycle or go to a runaway state. The other is that bursts of star formation from molecular clouds are expected if the gravitational instability of a cloud ensemble is considered.
書誌情報
Monthly Notices of the Royal Astronomical Society
en : Monthly Notices of the Royal Astronomical Society
nph-iarticle_query1984 (307.3 kB)
