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Structure and evolution of fossil h ii regions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schwarz, J. McCray, R. |
| Copyright Year | 1971 |
| Description | The structure and evolution of a fossil H II region created by a burst of ionizing radiation from a supernova is considered. The cooling time scale for the shell is about 10 to the 6th power years. Superposition of million-year-old fossil H II regions may account for the temperature and ionization of the interstellar medium. Fossil H II regions are unstable to growth of thermal condensations. Highly ionized filamentary structures form and dissipate in about 10,000 years. Partially ionized clouds form and dissipate in about 10 to the 6th power years. |
| File Size | 653808 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720004109 |
| Archival Resource Key | ark:/13960/t9f52dx4s |
| Language | English |
| Publisher Date | 1971-09-01 |
| Access Restriction | Open |
| Subject Keyword | Space Sciences Ionizing Radiation Clouds Conferences Supernovae Hydrogen Filaments H Ii Regions Evolution Development Interstellar Gas Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
