| タイトル | Winds in hot, subluminous stars |
| 著者（英） | Heap, S. R. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1979-01-01 |
| 言語 | eng |
| 内容記述 | Ultraviolet spectra over the wavelength range 1150 to 1750 A of the nuclei of two planetary nebulae are used to derive information concerning their winds. The nucleus of NGC 6826 is a 10th magnitude star with an O3f-type spectrum, an apparent terminal wind velocity of 2000 km/s, and a general level of ionization similar to that in Zeta Pup. The nucleus of Abell 78 is a 13th magnitude star having an OVI-type spectrum, an effective temperature between 100,000 and 150,000 K, and a gravity greater than 100,000 cm/second squared. Its apparent terminal wind velocity is 3400 km/s, and it has a very high general level of ionization. It is suggested that a luminosity-to-mass ratio (in solar units) greater than about 1600 is now an applicable mass-loss criterion for all hot stars, including planetary nuclei. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 80A16515 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/423644 |
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