Knowledge Resource Center for Ecological Environment in Arid Area
| 报告编号 | N20010094058 |
| Asteroid Size-Frequency Distribution (The ISO Deep Asteroid Survey). | |
| Tedesco, E. F. | |
| 英文摘要 | A total of six deep exposures (using AOT CAM01 with a 6 (inch) PFOV) through the ISOCAM LW10 filter (IRAS Band 1, i.e., 12 micro-m) were obtained on an approximately 15 arcminute square field centered on the ecliptic plane. Point sources were extracted using the technique described by Desert, et al. Two known asteroids appear in these frames and 20 sources moving with velocities appropriate for main belt asteroids are present. Most of the asteroids detected have flux densities less than 1 mJy, i.e., between 150 and 350 times fainter than any of the asteroids observed by Infrared Astronomy Satellite (IRAS). These data provide the first direct measurement of the 12 micro-m sky-plane density for asteroids on the ecliptic equator. The median zodiacal foreground, as measured by ISOCAM during this survey, is found to be 22.1 +/- 1.5 mJy per pixel, i.e., 26.2 +/- 1.7 MJy/sr. The results presented here imply that the actual number of kilometer-sized asteroids is significantly greater than previously believed and in reasonable agreement with the Statistical Asteroid Model. |
| 英文关键词 | Asteroids Infrared astronomy Sky surveys(Astronomy) Infrared space observatory(Iso) Spaceborne astronomy Asteroid detection Mathematical models Asteroid belts Infrared astronomy satellite Astronomical catalogs Size distribution Eclip |
| 出版年 | 2001 |
| 语种 | 英语 |
| 国家 | United States |
| URL | http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=59fac19331c97d1d549b0d7a |
| 来源机构 | National Aeronautics and Space Administration |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/272978 |
| 推荐引用方式 GB/T 7714 | Tedesco, E. F.. Asteroid Size-Frequency Distribution (The ISO Deep Asteroid Survey).,2001. |
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