NDLI: Cloud fluid models of gas dynamics and star formation in galaxies

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Cloud fluid models of gas dynamics and star formation in galaxies

Content Provider	NASA Technical Reports Server (NTRS)
Author	Appleton, P. N. Struck-Marcell Sr., Curtis Scalo, John M.
Copyright Year	1987
Description	The large dynamic range of star formation in galaxies, and the apparently complex environmental influences involved in triggering or suppressing star formation, challenges the understanding. The key to this understanding may be the detailed study of simple physical models for the dominant nonlinear interactions in interstellar cloud systems. One such model is described, a generalized Oort model cloud fluid, and two simple applications of it are explored. The first of these is the relaxation of an isolated volume of cloud fluid following a disturbance. Though very idealized, this closed box study suggests a physical mechanism for starbursts, which is based on the approximate commensurability of massive cloud lifetimes and cloud collisional growth times. The second application is to the modeling of colliding ring galaxies. In this case, the driving processes operating on a dynamical timescale interact with the local cloud processes operating on the above timescale. The results is a variety of interesting nonequilibrium behaviors, including spatial variations of star formation that do not depend monotonically on gas density.
File Size	1502512
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870014896
Archival Resource Key	ark:/13960/t18m26f57
Language	English
Publisher Date	1987-05-01
Access Restriction	Open
Subject Keyword	Astrophysics Radio Bursts Star Formation Fluid Dynamics Gas Dynamics Galactic Evolution Hydrogen Clouds Oort Cloud Nonlinearity Mathematical Models Ring Galaxies Spiral Galaxies Interstellar Matter Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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