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Updated: Jul 27, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
海尔-波普彗星 (C/1995 O1) 的活动和核的大小 [参见评论]
H A Weaver1, P D Feldman, M F A'Hearn
1Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.
概括
哈雷-波普彗星的彗星
科学领域:
- 天文学和天体物理学.
- 彗星科学是一门彗星科学.
背景情况:
- 哈勃太空望远镜 (HST) 图像的分析表明,哈雷波普彗星的核直径为27-42公里,比P/哈利彗星大得多.
- 来自HST和国际紫外线探测器 (IUE) 的光谱数据揭示了卡梅伦系统的OH,CS和CO排放,分别追踪H2O,CS2和CO2.
研究的目的:
- 为了分析哈勃太空望远镜 (HST) 拍摄的哈雷波普彗星的图像.
- 为了确定海尔-波普彗星的核大小和组成.
- 研究各种物种的生产率及其与日中距离的关系.
主要方法:
- 对哈勃太空望远镜 (HST) 图像进行分析,以估计核直径.
- 使用国际紫外线探测器和HST进行光谱分析,检测OH,CS和CO的排放.
- 与日心距离相关的水 (H2O),二硫化碳 (CS2) 和尘埃的生产速度.
主要成果:
- 哈雷波普彗星的核直径估计在27-42公里之间,比P/哈雷彗星大得多.
- 检测到OH (水),CS (二硫化碳) 和CO (二氧化碳) 的排放.
- H2O生产的日中心变化与冰体升华一致,但CS2和尘埃生产率显示出不同的依赖关系.
结论:
- 海尔波普彗星拥有相当大的核.
- 水的升华是H2O生产的主要驱动因素,但不是CS2和灰尘生产的唯一因素.
- 需要进一步的研究来了解控制彗星排气和尘埃释放的复杂过程.
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