| タイトル | Hydrogen-deficient atmospheres for cool carbon stars |
| 著者（英） | Luttermoser, D. G.; Johnson, H. R.; Alexander, D. R.; Bower, C. D.; Goebel, J. H.; Petrakis, J. P.; Reinhart, M. D.; Lemke, D. A.; Welch, K. A. |
| 著者所属（英） | Indiana Univ.|Wichita State Univ.|NASA Ames Research Center |
| 発行日 | 1985-05-01 |
| 言語 | eng |
| 内容記述 | Motivated by recent work which hints at a possible deficiency of hydrogen in non-Mira N-type carbon stars and to further explore the parameter space of chemical composition, computations have been made of a series of hydrogen-deficient models for carbon stars. For these models Teff = 3000 K, and log g = 0.0. Solar abundances are used for all elements except for carbon (which is enhanced to give C/O = 1.05), hydrogen, and helium. As the fractional abundance of hydrogen is decreased, being replaced by helium, the temperature-optical depth relation is affected only slightly, but the temperature-pressure relation is changed. The most striking change in the emergent flux is the decrease of the H(-) peak at 1.65 micron compared with the blackbody peak at 1.00 micron. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 85A35426 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/391305 |
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