| タイトル | IRAS constraints on a cold cloud around the solar system |
| 著者（英） | Aumann, Hartmut H.; Good, John C. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|California Inst. of Tech. |
| 発行日 | 1990-02-10 |
| 言語 | eng |
| 内容記述 | IRAS 60- and 100-micron observations of G-stars in the solar neighborhood indicate that the typical G star is surrounded by a cold cloud. The assumption that the sun is archetypical requires that a cloud of typical G star extent and temperature surrounds our solar system. IRAS ecliptic plane scans, which are dominated by a 40-deg wide band of zodiacal dust, asteroid debris trails, and the Galactic plane, are consistent with a larger than typical G star cold cloud. Consistency with the typical G star and the direct observations constrain the width of the cold cloud perpendicular to the ecliptic plane to be larger than 5 deg. The 100-150 AU radius of this cloud is larger, but not inconsistent with the inner boundary of a cloud of comets, postulated previously at a radius of 50 AU based on Neptune orbital perturbations and models of short period comets. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 90A24912 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/358059 |
|
