Report
Evidence for a Significant Kuiper Belt Dust Contribution to the Zodiacal Cloud
| العنوان: | Evidence for a Significant Kuiper Belt Dust Contribution to the Zodiacal Cloud |
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| المؤلفون: | Lindsay P. Keller, George J. Flynn |
| المصدر: | Nature Astronomy. 6 |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Space Sciences (General), Astronomy |
| الوصف: | Interplanetary dust particles (IDPs) are important samples of dust-producing objects in the solar system including many primitive and organic-rich bodies that are not sampled by known meteorites. IDPs spiral in towards the Sun under the influence of Poynting-Robertson (P-R) drag forces and are exposed to solar energetic particles (SEPs) that leave tracks of ionization damage in anhydrous silicate grains. We determined the exposure ages of track-rich IDPs using a new calibration of the SEP track production rate and show that track-rich IDPs have long exposure ages (>1 My) that preclude an origin from main-belt asteroids (MBAs) and Jupiter-family comets (JFCs). We propose that track-rich IDPs represent samples of dust produced by collisions among Edgeworth-Kuiper Belt objects (EKBOs) and that appreciable amounts of EKBO dust are contributing to the Zodiacal cloud. Many track-rich IDPs also contain abundant secondary minerals that provide direct evidence for past aqueous activity on some EKBOs. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 2397-3366 |
| DOI: | 10.1038/s41550-022-01647-6 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20220003947 |
| ملاحظات: | 811073.02.52.01.14 NNX19AE59G |
| رقم الانضمام: | edsnas.20220003947 |
| قاعدة البيانات: | NASA Technical Reports |
| تدمد: | 23973366 |
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| DOI: | 10.1038/s41550-022-01647-6 |