| タイトル | Infrared observations of periodic comets |
| 本文（外部サイト） | http://hdl.handle.net/2060/19890007280 |
| 著者（英） | Hanner, S. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1988-08-01 |
| 言語 | eng |
| 内容記述 | Selected comets are observed in the infrared with the NASA Infrared Telescope Facility (IRTF) and other telescopes as appropriate. The scientific objectives are to characterize the thermal emission from the dust coma, derive dust productions rates, detect silicate features near 10 and 20 micrometer, derive average albedo of the grains, and detect changes in grain size or composition with heliocentric distance as well as differences among comets. Knowledge of the dust environment is essential to design and mission planning for NASA's CRAF mission. |
| NASA分類 | ASTRONOMY |
| レポートNO | 89N16651 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/143486 |
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