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Yellow hypergiants as dynamically unstable post-red-supergiant stars
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Chin, Chao-wen Stothers, Richard B. |
| Copyright Year | 2001 |
| Description | According to recent theoretical studies, the majority of single stars more massive than 30 solar mass successfully evolve into red supergiants, but then lose most of their hydrogen envelopes and metamorphose into hot blue remnants. While they are cool, they become dynamically unstable as a result of high radiation pressure and partial ionization of the gases in their outer layers. It is shown here that these unstable red-supergiant models repeatedly shrink and re-expand on a thermal time scale when perturbed by heavy bursts of mass loss. Consequently, they fill up the domain of yellow hypergiants on the Hertzsprung-Russell diagram and display very fast rates of evolution there, as observed. |
| File Size | 356945 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010083764 |
| Archival Resource Key | ark:/13960/t5p89798b |
| Language | English |
| Publisher Date | 2001-07-02 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Gas Ionization Stellar Color Hertzsprung-russell Diagram Stellar Mass Supergiant Stars Stellar Evolution Stellar Activity Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
