| タイトル | The abundance of ammonia in Comet P/Halley derived from ultraviolet spectrophotometry of NH by ASTRON and IUE |
| 著者（英） | Grinin, V. P.; Fournier, K. B.; Feldman, P. D.; Zvereva, A. M. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1993-02-10 |
| 言語 | eng |
| 内容記述 | From an analysis of the spatial profiles of both the NH and OH UV emissions observed by the ASTRON satellite, the ratio of ammonia-to-water production rates in Comet Halley on April 9, 1986 is derived and found to lie in the range of 0.44-0.94 percent. In order to compare this result with those based on both ground-based and in situ observations made on other dates during the 1985-1986 apparition of the comet, the IUE observational data base for December 1985 and March-April 1986 is used to evaluate the ratio of NH to OH column density in the IUE field of view and thus constrain the long-term behavior of this ratio. The IUE data base indicates that, to within a factor of 2, the ammonia-to-water production rate ratio is the same for a small sample of moderately bright comets observed recently. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 93A25432 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/320143 |
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